Aqueous Ni-Zn microbatteries are safe,reliable and inexpensive but notoriously suffer from inadequate energy and power densities.Herein,we present a novel mechanism of superoxide-activated Ni substrate that realizes t...Aqueous Ni-Zn microbatteries are safe,reliable and inexpensive but notoriously suffer from inadequate energy and power densities.Herein,we present a novel mechanism of superoxide-activated Ni substrate that realizes the redox reaction featuring three-electron transfers(Ni↔Ni3+).The superoxide activates the direct redox reaction between Ni substrate and KNiO_(2)by lowering the reaction Gibbs free energy,supported by in-situ Raman and density functional theory simulations.The prepared chronopotentiostatic superoxidation-activated Ni(CPS-Ni)electrodes exhibit an ultrahigh capacity of 3.21 mAh cm^(-2)at the current density of 5 mA cm^(-2),nearly 8 times that of traditional one-electron processes electrodes.Even under the ultrahigh 200 mA cm^(-2)current density,the CPS-Ni electrodes show 86.4%capacity retention with a Columbic efficiency of 99.2%after 10,000 cycles.The CPS-Ni||Zn microbattery achieves an exceptional energy density of 6.88 mWh cm^(-2)and power density of 339.56 mW cm^(-2).Device demonstration shows that the power source can continuously operate for more than 7 days in powering the sensing and computation intensive practical application of photoplethysmographic waveform monitoring.This work paves the way to the development of multi-electron transfer mechanisms for advanced aqueous Ni-Zn batteries with high capacity and long lifetime.展开更多
Aqueous rechargeable multiple metal-ion storage battery (ARSB) has a large potential in energy storage devices due to their safe usage, low cost and high rate capability. Nevertheless, the performance of practical ARS...Aqueous rechargeable multiple metal-ion storage battery (ARSB) has a large potential in energy storage devices due to their safe usage, low cost and high rate capability. Nevertheless, the performance of practical ARSB is largely restricted by low capacity and limited cathode materials. Herein, we demonstrate an efficient cathode material based on Co Ni-layered double hydroxide (LDH) nanosheets arrays with abundant hydrogen vacancy induced by electrochemical activation process for high performance of cations storage. Consequently, the electrochemical activated Co Ni-LDH (ECA-Co Ni-LDH) nanosheets arrays exhibit high metal ion (Li^(+), Na^(+), Zn^(2+), Mg^(2+) and Ca^(2+)) storage capacities, which is 9 times and 3 times higher that of unactivated Co Ni-LDH arrays and ECA-Co Ni-LDH without hierarchical structure, respectively.Moreover, the ECA-Co Fe-LDH also shows the possibility for practical applications in actual batteries.By coupling with a Fe_(2)O_(3)/C anode, the assembled aqueous battery delivered a large energy density of 184.4 Wh kg^(-1)at power density of 4 Wh kg^(-1) in high voltage range of 0–2 V. To our best knowledge, such high energy density and large working window of our assembled aqueous battery is exceeded other LDH-based aqueous battery or supercapacitor, and the energy density almost comparable than that of commercial Li-ion batteries. Moreover, almost no measurable capacitance losses can be detected even after 10000 cycles. In addition, this work also provides a strategy to develop a high energy density cathode for multiple metal-ion storage batteries.展开更多
To meet the demand for energy storage devices with high safety,excellent flexibility,and environmental compatibility in wearable electronic devices,fiber-shaped aqueous batteries(FABs)have become a key research direct...To meet the demand for energy storage devices with high safety,excellent flexibility,and environmental compatibility in wearable electronic devices,fiber-shaped aqueous batteries(FABs)have become a key research direction in the field of flexible energy storage.This paper systematically reviews the latest research progress of FABs.Firstly,it elaborates on their core working mechanisms,including the intercalation mechanism involving reversible insertion/extraction of charge carriers,the conversion mechanism characterized by changes in the oxidation state and phase of electrode materials and the deposition/dissolution mechanism of metal ions.Subsequently,it summarizes the design principles from three dimensions:electrode fabrication(surface coating,in-situ growth,thermal drawing,solution spinning),device architectures(parallel,twisted,coaxial,crossing),and performance evaluation metrics(energy density,specific capacity,long-term cycling stability,flexibility).Additionally,the paper combs the research breakthroughs of FABs based on Li^(+)/Na^(+),multivalent ions(Zn^(2+)/Mg^(2+)/Ca^(2+)/Al^(3+)),NH_(4)^(+),and alkaline systems,and introduces their applications in energy storage-photoelectric response integration,energy storage-sensing integration,and multi-device power supply.Finally,it points out the challenges,such as low utilization efficiency of electrode materials and poor interface stability,and looks forward to the development directions including intelligent materials,manufacturing technologies,and standardization construction,which provides references for the industrialization of FABs and the development of next-generation flexible energy storage technologies.展开更多
To address challenges related to the intermittency of renewable energy sources,aqueous potassium-ion batteries(AKIBs)are a promising and sustainable alternative to conventional systems for large-scale energy storage.T...To address challenges related to the intermittency of renewable energy sources,aqueous potassium-ion batteries(AKIBs)are a promising and sustainable alternative to conventional systems for large-scale energy storage.To enable their practical application,maximizing energy density and longevity while minimizing production and material costs is a key goal.In this work,we propose an AKIB consisting only of abundant and cost-efficient materials,which delivers a high energy density of more than 70 Wh kg^(-1).We combine simple strategies to stabilize the Mn-rich Prussian blue analog cathode by Fe-doping,improving the crystallinity,and tuning the electrolyte composition without employing expensive water-in-salt electrolytes.Using a mixed 2.5 M Ca(NO_(3))_(2)+1.5 M KNO_(3)electrolyte,we assemble a novel AKIB with a Fe-doped manganese hexacyanoferrate cathode and an organic poly(naphthalene-4-formylethylenediamine)anode.Besides a high energy density,the full cell delivers a specific capacity of approximately 60 mAhg^(-1),a power density of 5000 W kg^(-1),and 80% capacity retention after 600 cycles.展开更多
Aqueous hybrid-ion batteries(AHBs)are a promising class of energy storage devices characterized by low cost,high safety,and high energy density.However,aqueous Cu-Al hybrid-ion batteries face challenges such as sluggi...Aqueous hybrid-ion batteries(AHBs)are a promising class of energy storage devices characterized by low cost,high safety,and high energy density.However,aqueous Cu-Al hybrid-ion batteries face challenges such as sluggish reaction kinetics and severe structural collapse of cathode materials,which limit their practical application.Here,a high-performance aqueous Cu-Al hybrid-ion battery is developed using aluminum pre-inserted Cu_(9)S_(5)(Al-Cu_(9)S_(5))as the cathode material,derived from CuAl-layered double hydroxide(CuAl-LDH).The Al^(3+)pre-intercalation strategy narrows the band gap,enhancing electron transport and improving electrochemical kinetics.The battery exhibits excellent rate performance(463 and 408 mA h g^(-1)at current densities of 500 and 1000 mA g^(-1),respectively)and good cycle stability(with a capacity retention ratio of 81% after 300 cycles at a current density of 1000 mA g^(-1)).Its performance surpasses that of most reported Al-ion batteries.Ex situ characterization and density functional theory(DFT)calculations reveal that the pre-intercalated Al^(3+)in Al-Cu9S5participates in the reversible embedding/removal of Al ions during charge/discharge processes.These findings provide valuable insights for designing pre-intercalated cathodes in aqueous Cu-Al hybrid-ion batteries with stable cycle life.展开更多
The Jahn-Teller effect of Mn^(3+)brings drastic structural changes to MnO_(2)-based materials and accelerates the destruction and deactivation of the internal structure of the materials,thus leading to severe capacity...The Jahn-Teller effect of Mn^(3+)brings drastic structural changes to MnO_(2)-based materials and accelerates the destruction and deactivation of the internal structure of the materials,thus leading to severe capacity fading and phase change of MnO_(2)-based materials in aqueous zinc ion batteries(AZIBs).Here,this study doped high valent vanadium ions into MnO_(2)(VMO-x)to inhibit manganese's Jahn-Teller effect.Through a series of characterizations,such as X-ray diffraction(XRD),Raman spectroscopy,and scanning electron microscopy(SEM),it was discovered that the introduction of vanadium ions effectively increased the interlayer spacing of MnO_(2),facilitating the transport of ions into the interlayer.Additionally,Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)demonstrated vanadium doped could effectively adjust the electronic structure,decreasing the average oxidation state of manganese,thereby inhibiting the Jahn-Teller effect and significantly enhancing the stability of the VMO-x cathode.The theoretical calculation showed that introducing vanadium ions enhanced the interaction between the main material and Zn^(2+),optimized its electron transport capacity,and led to better electrical conductivity and reaction kinetics of the VMO-5.Benefiting from this,the VMO-5 cathode exhibited an outstanding capacity of 283 mAh/g and maintained a capacity retention rate of 79%after 2000 cycles,demonstrating excellent electrochemical performance.Furthermore,the mechanism of H^(+)/Zn^(2+)co-intercalation/deintercalation was demonstrated through mechanism analysis.Finally,the test results of the pouch cell demonstrated the excellent flexibility and safety exhibited by the VMO-5 make it have great potential in flexible devices.This work presented a novel approach to doping high valence metal ions into manganese-based electrodes for AZIBs.展开更多
Aqueous zinc-ion batteries(AZIBs)have attracted significant attention due to their high energy density,low cost,high efficiency,and environmental friendliness.Nevertheless,the development of AZIBs has been significant...Aqueous zinc-ion batteries(AZIBs)have attracted significant attention due to their high energy density,low cost,high efficiency,and environmental friendliness.Nevertheless,the development of AZIBs has been significantly hindered by the unavoidable issues with zinc dendrites and the side reactions of the anode.The strategies for stable and controllable interfacial regulation have recently made rapid progress,due to their dual function of improving zinc ion transport dynamics and preventing direct contact of zinc with electrolytes.Therefore,it's imperative to conduct a comprehensive summary of the interfacial regulation of zinc anodes and to engage in in-depth research into the underlying mechanisms.Subsequently,the interfacial regulation was classified based on battery structure,including anode coating strategy,electrolyte engineering,and separator optimization.Eventually,the current limitations of interfacial regulation and a deep outlook on AZIBs interface engineering are summarized.展开更多
The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries(AZIBs). These challenges arise from the inherent conflict betwe...The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries(AZIBs). These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose(Xylo) molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn^(2+)ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.展开更多
Hydrogels based on Deep Eutectic Solvents(DES)demonstrate remarkable anti-freezing,resilience,and toughness,presenting a promising avenue to the operation of aqueous zincion batteries under extreme conditions.A gel el...Hydrogels based on Deep Eutectic Solvents(DES)demonstrate remarkable anti-freezing,resilience,and toughness,presenting a promising avenue to the operation of aqueous zincion batteries under extreme conditions.A gel electrolyte capable of operating over a wide temperature range is developed based on a DES comprising 1 mol/kg(m)Zn(ClO_(4))_(2)+3.5 m Mg(ClO_(4))_(2).Spectral characterization confirms the synergistic influence of both anions and cations on the freezing point of the DES.With four hydrogen bond(HB)acceptors,Mg^(2+) exhibits strong electrostatic attraction towards the O atoms of H_(2)O,while ClO_(4)^(-)forms numerous HBs with H_(2)O molecules.This dual interaction allows for precise adjustment of the chemical environment around the H and O atoms of H_(2)O,resulting in an exceptionally low freezing point of-116.92℃for the DES.The gel electrolyte derived from this DES demonstrates an impressive ionic conductivity of 0.285 mS/cm at-70℃.Leveraging its excellent low-temperature performance and compatibility with a zinc anode,the flexible Zn-Mn battery constructed with this electrolyte exhibits robust electrochemical performance at low temperatures.Specifically,at-70℃,it achieves a high specific capacity of 76.83 mAh/g,displays excellent rate capability,andmaintains stable cycling performance.Moreover,the Zn-Mn battery operates reliably across a broad temperature range from-70 to 80℃.This study presents innovative insights for advancing Zn-Mn batteries capable of efficient operation across diverse environmental conditions,thereby opening new avenues for their development.展开更多
Common anode materials in aqueous alkaline electrolytes,such as cadmium,metal hydrides and zinc,usually suffer from remarkable biotoxicity,high cost,and serious side reactions.To overcome these problems,we develop a c...Common anode materials in aqueous alkaline electrolytes,such as cadmium,metal hydrides and zinc,usually suffer from remarkable biotoxicity,high cost,and serious side reactions.To overcome these problems,we develop a conjugated porous polymer(CPP)in-situ grown on reduced graphene oxide(rGO)and Ketjen black(KB),noted as C_(4)N/rGO and C_(4)N/KB respectively,as the alternative anodes.The results show that C_(4)N/rGO electrode delivers a low redox potential(−0.905 V vs.Ag/AgCl),high specific capacity(268.8 mAh g^(-1) at 0.2 A g^(-1)),ultra-stable and fast sodium ion storage behavior(216 mAh g^(-1) at 20 A g^(-1))in 2 M NaOH electrolyte.The assembled C_(4)N/rGO//Ni(OH)_(2) full battery can cycle stably more than 38,000 cycles.Furthermore,by adding a small amount of antifreeze additive dimethyl sulfoxide(DMSO)to adjust the hydrogen bonding network,the low-temperature performance of the electrolyte(0.1 DMSO/2 M NaOH)is significantly improved while hydrogen evolution is inhibited.Consequently,the C_(4)N/rGO//Ni(OH)_(2) full cell exhibits an energy density of 147.3 Wh Kg^(-1) and ultra-high cycling stability over a wide temperature range from−70 to 45℃.This work provides an ultra-stable high-capacity CPPbased anode and antifreeze electrolyte for aqueous alkaline batteries and will facilitate their practical applications under extreme conditions.展开更多
In the post-lithium-ion battery era,potassium-ion batteries(PIBs)show great potential due to their high energy density and economic competitiveness from abundant potassium resources.In comparison with traditional orga...In the post-lithium-ion battery era,potassium-ion batteries(PIBs)show great potential due to their high energy density and economic competitiveness from abundant potassium resources.In comparison with traditional organic electrolytes,aqueous electrolytes bring lower costs,higher safety,and more environmentally friendly preparation processes for PIBs.Against this background,aqueous PIBs(APIBs)have gradually become a research hotspot in the past few years.Cathodes,a critical component of APIBs,directly affect energy density,safety,and stability.Herein,this review systematically summarizes the research progress of typical APIB cathode materials,some breakthrough investigations of which are highlighted.Meanwhile,material synthesis methods,electrolyte design strategies,electrochemical performance optimization pathways,and electrochemical reaction mechanisms are introduced briefly.Finally,the current challenges and corresponding improvement strategies are proposed to provide a reference for further development.展开更多
Aqueous zinc-ion batteries(AZIBs)have garnered considerable attention as promising post-lithium energy storage technologies owing to their intrinsic safety,cost-effectiveness,and competitive gravimetric energy density...Aqueous zinc-ion batteries(AZIBs)have garnered considerable attention as promising post-lithium energy storage technologies owing to their intrinsic safety,cost-effectiveness,and competitive gravimetric energy density.However,their practical commercialization is hindered by critical challenges on the anode side,including dendrite growth and parasitic reactions at the anode/electrolyte interface.Recent studies highlight that rational electrolyte structure engineering offers an effective route to mitigate these issues and strengthen the electrochemical performance of the zinc metal anode.In this review,we systematically summarize state-of-the-art strategies for electrolyte optimization,with a particular focus on the zinc salts regulation,electrolyte additives,and the construction of novel electrolytes,while elucidating the underlying design principles.We further discuss the key structure–property relationships governing electrolyte behavior to provide guidance for the development of next-generation electrolytes.Finally,future perspectives on advanced electrolyte design are proposed.This review aims to serve as a comprehensive reference for researchers exploring high-performance electrolyte engineering in AZIBs.展开更多
Aqueous alkali metal-ion batteries(AAMIBs)have been recognized as emerging electrochemical energy storage technologies for grid-scale applications owning to their intrinsic safety,cost-effectiveness,and environmental ...Aqueous alkali metal-ion batteries(AAMIBs)have been recognized as emerging electrochemical energy storage technologies for grid-scale applications owning to their intrinsic safety,cost-effectiveness,and environmental sustainability.However,the practical application of AAMIBs is still severely constrained by the tendency of aqueous electrolytes to freeze at low temperatures and decompose at high temperatures,limiting their operational temperature range.Considering the urgent need for energy systems with higher adaptability and resilience at various application scenarios,designing novel electrolytes via structure modulation has increasingly emerged as a feasible and economical strategy for the performance optimization of wide-temperature AAMIBs.In this review,the latest advancement of wide-temperature electrolytes for AAMIBs is systematically and comprehensively summarized.Specifically,the key challenges,failure mechanisms,correlations between hydrogen bond behaviors and physicochemical properties,and thermodynamic and kinetic interpretations in aqueous electrolytes are discussed firstly.Additionally,we offer forward-looking insights and innovative design principles for developing aqueous electrolytes capable of operating across a broad temperature range.This review is expected to provide some guidance and reference for the rational design and regulation of widetemperature electrolytes for AAMIBs and promote their future development.展开更多
Aqueous zinc metal batteries(AZMBs)face significant challenges in achieving reversibility and cycling stability,primarily due to hydrogen evolution reactions(HER)and zinc dendrite growth.In this study,by employing car...Aqueous zinc metal batteries(AZMBs)face significant challenges in achieving reversibility and cycling stability,primarily due to hydrogen evolution reactions(HER)and zinc dendrite growth.In this study,by employing carefully designed cells that approximate the structural characteristics of practical batteries,we revisit this widely held view through in-operando X-ray radiography to examine zinc dendrite formation and HER under nearpractical operating conditions.While conventional understanding emphasizes the severity of these processes,our findings suggest that zinc dendrites and HER are noticeably less pronounced in dense,real-operation configurations compared to modified cells,possibly due to a more uniform electric field and the suppression of triple-phase boundaries.This study indicates that other components,such as degradation at the cathode current collector interface and configuration mismatches within the full cell,may also represent important barriers to the practical application of AZMBs,particularly during the early stages of electrodeposition.展开更多
As an effective energy storage technology, rechargeable batteries have long been considered as a promising solution for grid integration of intermittent renewables(such as solar and wind energy). However,their wide ap...As an effective energy storage technology, rechargeable batteries have long been considered as a promising solution for grid integration of intermittent renewables(such as solar and wind energy). However,their wide application is still limited by safety issue and high cost. Herein, a new battery chemistry is proposed to satisfy the requirements of grid energy storage. We report a simple Cu-Mn battery, which is composed of two separated current collectors in an H2SO4-CuSO4-MnSO4 electrolyte without using any membrane. The Cu-Mn battery shows an energy density of 40.8 Wh L-1, a super-long life of 10,000 cycles(without obvious capacity decay) and negligible self-discharge. And the capital cost of US$ 11.9 kWh-1 based on electrolyte is lower than any previous batteries. More importantly, the battery can still work smoothly during thermal abuse test and drill-through test, showing high safe nature. Furthermore, a combination system integrating the Cu-Mn battery and hydrogen evolution is also proposed, which is able to avoid the generation of explosive H2/O2 mixture, and presents an efficient approach for grid energy storage and conversion.展开更多
Aqueous Mg ion batteries(AMIBs)show great potential in energy storage for their advantages of high capacity,abundant resource,and environmental friendliness.However,the development of AMIBs is limited due to the scarc...Aqueous Mg ion batteries(AMIBs)show great potential in energy storage for their advantages of high capacity,abundant resource,and environmental friendliness.However,the development of AMIBs is limited due to the scarcity of suitable anode materials.In this study,a new polymer anode material(PNTAQ)with flower-like nanosheet structure is synthesized for aqueous Mg-Na hybrid-ion battery(AMNHIB).PNTAQ possess carbonyl functional groups which can be oxidized and reduced reversibly in aqueous solution containing alkaline metal ions.PNTAQ displays a discharge specific capacity of 245 mAh g^(−1)at 50 mA g^(−1)in 1 M MgCl_(2)+0.5 M NaCl electrolyte,which is much higher than that in single 1 M MgCl_(2)or 0.5 M NaCl electrolyte.Even cycling at 1000 mA g^(−1)for 1000 times,the capacity retention can still maintain at 87.2%.A full Mg-Na hybrid-ion cell is assembled by employingβ-MnO_(2)as cathode and PNTAQ as anode material,it exhibits a specific capacity of 91.6 mAh g^(−1)at 100 mA g^(−1).The polymer electrode material well maintains its framework structure during the discharge/charge cycling process of the hybrid-ion battery.展开更多
Aqueous Zn-ion battery(AZIB)has become an attractive technology because of its unique features of low cost,high safety and the eco-friendliness.MnO_(2) is the model cathode material for AZIB since the first report on ...Aqueous Zn-ion battery(AZIB)has become an attractive technology because of its unique features of low cost,high safety and the eco-friendliness.MnO_(2) is the model cathode material for AZIB since the first report on reversible Zn-MnO_(2) battery,but recent studies have unveiled different charge storage mechanisms.Due to revamping of the electrochemistry and redesigning of the electrolyte and interface,there is tremendous performance enhancement in AZIB.This mini Review will first give a brief introduction of ZIB,including fundamentals of materials and components,and the progress in recent years.Then,a general classification of working mechanisms related to MnO_(2) in neutral and mildly acidic electrolyte is elaborated.Our focus is put on the recent blossoming Zn-MnO_(2) electrolytic mechanism,which has given birth to the Zn-MnO_(2) redox flow batteries that are highly promising for large-scale static energy storage.展开更多
Metallic zinc(Zn)is one of the most attractive multivalent-metal anode materials in post-lithium batteries because of its high abundance,low cost and high theoretical capacity.However,it usually suffers from large vol...Metallic zinc(Zn)is one of the most attractive multivalent-metal anode materials in post-lithium batteries because of its high abundance,low cost and high theoretical capacity.However,it usually suffers from large voltage polarization,low Coulombic efficiency and high propensity for dendritic failure during Zn stripping/plating,hindering the practical application in aqueous rechargeable zinc-metal batteries(AR-ZMBs).Here we demonstrate that anionic surfactant-assisted in situ surface alloying of Cu and Zn remarkably improves Zn reversibility of 3D nanoporous Zn electrodes for potential use as high-performance AR-ZMB anode materials.As a result of the zincophilic ZnxCuy alloy shell guiding uniform Zn deposition with a zero nucleation overpotential and facilitating Zn stripping via the ZnxCuy/Zn galvanic couples,the self-supported nanoporous ZnxCuy/Zn electrodes exhibit superior dendrite-free Zn stripping/plating behaviors in ambient aqueous electrolyte,with ultralow polarizations under current densities up to 50 mA cm^(‒2),exceptional stability for 1900 h and high Zn utilization.This enables AR-ZMB full cells constructed with nanoporous ZnxCuy/Zn anode and K_(z)MnO_(2)cathode to achieve specific energy of as high as~430 Wh kg^(‒1)with~99.8%Coulombic efficiency,and retain~86%after long-term cycles for>700 h.展开更多
Aqueous batteries,renowned for their cost-effectiveness and non-flammability,have attracted considerable attention in the realm of batteries featuring Zn-based and Sn-based configurations.These configurations employ Z...Aqueous batteries,renowned for their cost-effectiveness and non-flammability,have attracted considerable attention in the realm of batteries featuring Zn-based and Sn-based configurations.These configurations employ Zn and Sn metal anodes,respectively.While the growth patterns of Zn under various current densities have been extensively studied,there has been a scarcity of research on Sn dendrite growth.Our operando imaging analysis reveals that,unlike Zn,Sn forms sharp dendrites at high current density emphasizing the crucial necessity for implementing strategies to suppress the dendrites formation.To address this issue,we introduced a carbon nanotube(CNT)layer on copper foil,effectively preventing the formation of Sn dendrites under high current density,thus enabling the high-current operation of Sn metal batteries.We believe that our work highlights the importance of suppressing dendrite formation in aqueous Sn metal batteries operating at high current density and introduces a fresh perspective on mitigating Sn dendrite formation.展开更多
Aqueous ammonium batteries(AAIBs)gain extensive attention because of their merits,such as costeffectiveness,eco-friendliness,and safety.Nevertheless,the limited research on electrode materials impedes their further de...Aqueous ammonium batteries(AAIBs)gain extensive attention because of their merits,such as costeffectiveness,eco-friendliness,and safety.Nevertheless,the limited research on electrode materials impedes their further development.Here,we prepare Cu_(x)O(x=1,2)materials and apply them as cathode materials for AAIBs.The electrodes have a high discharge-specific capacity and a long and stable charge-discharge plateau.In accordance with density functional theory,the mechanism of NH_(4)^(+)storage involves the reversible formation and breaking of hydrogen bonds.Simultaneously,CuO contributes additional electrons and facilitates the rearrangement of internal electrons,thereby enhancing the storage performance of NH_(4)^(+).To further improve the chemical reaction kinetics and address the limited cycle stability of CuO,a compositematerial composed of CuO and carbon(CuO/C)is developed.The findings demonstrate that CuO/C exhibits superior rate capability,with an initial discharge-specific capacity reaching 1851 mAh g^(-1)(0.1 A g^(-1))and improved reversible cycle performance(113 mAh g^(-1)after 400cycles).This study investigates the application of CuO as the cathode material in AAIBs and presents new opportunities for future industrial development.展开更多
基金supported by InnoHK Project at Hong Kong Centre for Cerebro-cardiovascular Health Engineering (COCHE)City University of Hong Kong (7006108)。
文摘Aqueous Ni-Zn microbatteries are safe,reliable and inexpensive but notoriously suffer from inadequate energy and power densities.Herein,we present a novel mechanism of superoxide-activated Ni substrate that realizes the redox reaction featuring three-electron transfers(Ni↔Ni3+).The superoxide activates the direct redox reaction between Ni substrate and KNiO_(2)by lowering the reaction Gibbs free energy,supported by in-situ Raman and density functional theory simulations.The prepared chronopotentiostatic superoxidation-activated Ni(CPS-Ni)electrodes exhibit an ultrahigh capacity of 3.21 mAh cm^(-2)at the current density of 5 mA cm^(-2),nearly 8 times that of traditional one-electron processes electrodes.Even under the ultrahigh 200 mA cm^(-2)current density,the CPS-Ni electrodes show 86.4%capacity retention with a Columbic efficiency of 99.2%after 10,000 cycles.The CPS-Ni||Zn microbattery achieves an exceptional energy density of 6.88 mWh cm^(-2)and power density of 339.56 mW cm^(-2).Device demonstration shows that the power source can continuously operate for more than 7 days in powering the sensing and computation intensive practical application of photoplethysmographic waveform monitoring.This work paves the way to the development of multi-electron transfer mechanisms for advanced aqueous Ni-Zn batteries with high capacity and long lifetime.
基金supported by the National Natural Science Foundation of China (21922501 and 21521005)the Fundamental Research Funds for the Central Universities (XK1802-6, XK180305 and ZY2118)。
文摘Aqueous rechargeable multiple metal-ion storage battery (ARSB) has a large potential in energy storage devices due to their safe usage, low cost and high rate capability. Nevertheless, the performance of practical ARSB is largely restricted by low capacity and limited cathode materials. Herein, we demonstrate an efficient cathode material based on Co Ni-layered double hydroxide (LDH) nanosheets arrays with abundant hydrogen vacancy induced by electrochemical activation process for high performance of cations storage. Consequently, the electrochemical activated Co Ni-LDH (ECA-Co Ni-LDH) nanosheets arrays exhibit high metal ion (Li^(+), Na^(+), Zn^(2+), Mg^(2+) and Ca^(2+)) storage capacities, which is 9 times and 3 times higher that of unactivated Co Ni-LDH arrays and ECA-Co Ni-LDH without hierarchical structure, respectively.Moreover, the ECA-Co Fe-LDH also shows the possibility for practical applications in actual batteries.By coupling with a Fe_(2)O_(3)/C anode, the assembled aqueous battery delivered a large energy density of 184.4 Wh kg^(-1)at power density of 4 Wh kg^(-1) in high voltage range of 0–2 V. To our best knowledge, such high energy density and large working window of our assembled aqueous battery is exceeded other LDH-based aqueous battery or supercapacitor, and the energy density almost comparable than that of commercial Li-ion batteries. Moreover, almost no measurable capacitance losses can be detected even after 10000 cycles. In addition, this work also provides a strategy to develop a high energy density cathode for multiple metal-ion storage batteries.
基金supported by the National Natural Science Foundation of China(52473270,T2422028)the National Key R&D Program of China(2022YFA1203304)+3 种基金the Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences(start-up grant,E1552102)the China Postdoctoral Science Foundation(2024M764385,GZC20250555,GZC20250062)the Jiangsu Funding Program for Excellent Postdoctoral Talent(2025ZB291)。
文摘To meet the demand for energy storage devices with high safety,excellent flexibility,and environmental compatibility in wearable electronic devices,fiber-shaped aqueous batteries(FABs)have become a key research direction in the field of flexible energy storage.This paper systematically reviews the latest research progress of FABs.Firstly,it elaborates on their core working mechanisms,including the intercalation mechanism involving reversible insertion/extraction of charge carriers,the conversion mechanism characterized by changes in the oxidation state and phase of electrode materials and the deposition/dissolution mechanism of metal ions.Subsequently,it summarizes the design principles from three dimensions:electrode fabrication(surface coating,in-situ growth,thermal drawing,solution spinning),device architectures(parallel,twisted,coaxial,crossing),and performance evaluation metrics(energy density,specific capacity,long-term cycling stability,flexibility).Additionally,the paper combs the research breakthroughs of FABs based on Li^(+)/Na^(+),multivalent ions(Zn^(2+)/Mg^(2+)/Ca^(2+)/Al^(3+)),NH_(4)^(+),and alkaline systems,and introduces their applications in energy storage-photoelectric response integration,energy storage-sensing integration,and multi-device power supply.Finally,it points out the challenges,such as low utilization efficiency of electrode materials and poor interface stability,and looks forward to the development directions including intelligent materials,manufacturing technologies,and standardization construction,which provides references for the industrialization of FABs and the development of next-generation flexible energy storage technologies.
基金Deutsche Forschungsgemeinschaft(DFG,German Research Foundation)under Germany’s Excellence Strategy-EXC 2089/1-390776260(e-conversion)for fundingfinancial support from TUM Innovation Network for Artificial Intelligence powered Multifunctional Material Design(ARTEMIS)。
文摘To address challenges related to the intermittency of renewable energy sources,aqueous potassium-ion batteries(AKIBs)are a promising and sustainable alternative to conventional systems for large-scale energy storage.To enable their practical application,maximizing energy density and longevity while minimizing production and material costs is a key goal.In this work,we propose an AKIB consisting only of abundant and cost-efficient materials,which delivers a high energy density of more than 70 Wh kg^(-1).We combine simple strategies to stabilize the Mn-rich Prussian blue analog cathode by Fe-doping,improving the crystallinity,and tuning the electrolyte composition without employing expensive water-in-salt electrolytes.Using a mixed 2.5 M Ca(NO_(3))_(2)+1.5 M KNO_(3)electrolyte,we assemble a novel AKIB with a Fe-doped manganese hexacyanoferrate cathode and an organic poly(naphthalene-4-formylethylenediamine)anode.Besides a high energy density,the full cell delivers a specific capacity of approximately 60 mAhg^(-1),a power density of 5000 W kg^(-1),and 80% capacity retention after 600 cycles.
基金supported by the National Natural Science Foundation of China(Nos.22278020 and 2177060378)the Fundamental Research Funds for the Central Universities(Nos.12060093063 and XK1803-05)the Program for Changjiang Scholars and Innovative Research Teams in University(No.IRT1205)。
文摘Aqueous hybrid-ion batteries(AHBs)are a promising class of energy storage devices characterized by low cost,high safety,and high energy density.However,aqueous Cu-Al hybrid-ion batteries face challenges such as sluggish reaction kinetics and severe structural collapse of cathode materials,which limit their practical application.Here,a high-performance aqueous Cu-Al hybrid-ion battery is developed using aluminum pre-inserted Cu_(9)S_(5)(Al-Cu_(9)S_(5))as the cathode material,derived from CuAl-layered double hydroxide(CuAl-LDH).The Al^(3+)pre-intercalation strategy narrows the band gap,enhancing electron transport and improving electrochemical kinetics.The battery exhibits excellent rate performance(463 and 408 mA h g^(-1)at current densities of 500 and 1000 mA g^(-1),respectively)and good cycle stability(with a capacity retention ratio of 81% after 300 cycles at a current density of 1000 mA g^(-1)).Its performance surpasses that of most reported Al-ion batteries.Ex situ characterization and density functional theory(DFT)calculations reveal that the pre-intercalated Al^(3+)in Al-Cu9S5participates in the reversible embedding/removal of Al ions during charge/discharge processes.These findings provide valuable insights for designing pre-intercalated cathodes in aqueous Cu-Al hybrid-ion batteries with stable cycle life.
基金supported the National Key Research and Development Program of China(No.2024YFA1409900)the National Natural Science Foundation of China(Nos.62101296 and 52303335)+2 种基金the China Postdoctoral Science Foundation(Nos.2021M702656 and 2023M730099)the Natural Science Foundation of Shaanxi Province(Nos.2021JQ-756 and 2021M702656)the Graduate Innovation Fund of the School of Mechanical Engineering,Shaanxi University of Technology(No.SLGJX202404)。
文摘The Jahn-Teller effect of Mn^(3+)brings drastic structural changes to MnO_(2)-based materials and accelerates the destruction and deactivation of the internal structure of the materials,thus leading to severe capacity fading and phase change of MnO_(2)-based materials in aqueous zinc ion batteries(AZIBs).Here,this study doped high valent vanadium ions into MnO_(2)(VMO-x)to inhibit manganese's Jahn-Teller effect.Through a series of characterizations,such as X-ray diffraction(XRD),Raman spectroscopy,and scanning electron microscopy(SEM),it was discovered that the introduction of vanadium ions effectively increased the interlayer spacing of MnO_(2),facilitating the transport of ions into the interlayer.Additionally,Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS)demonstrated vanadium doped could effectively adjust the electronic structure,decreasing the average oxidation state of manganese,thereby inhibiting the Jahn-Teller effect and significantly enhancing the stability of the VMO-x cathode.The theoretical calculation showed that introducing vanadium ions enhanced the interaction between the main material and Zn^(2+),optimized its electron transport capacity,and led to better electrical conductivity and reaction kinetics of the VMO-5.Benefiting from this,the VMO-5 cathode exhibited an outstanding capacity of 283 mAh/g and maintained a capacity retention rate of 79%after 2000 cycles,demonstrating excellent electrochemical performance.Furthermore,the mechanism of H^(+)/Zn^(2+)co-intercalation/deintercalation was demonstrated through mechanism analysis.Finally,the test results of the pouch cell demonstrated the excellent flexibility and safety exhibited by the VMO-5 make it have great potential in flexible devices.This work presented a novel approach to doping high valence metal ions into manganese-based electrodes for AZIBs.
基金supported by Central Guided Local Science and Technology Development Funds Project of Hebei Province(No.246Z4414G)the Natural Science Foundation of Hebei Province(No.E2020209151,E2022209158,H2022209012)+3 种基金Science and Technology Project of Hebei Education Department(No.BJK2024039)Youth Scholars Promotion Plan of North China University of Science and Technology(No.QNTJ202309)the Open Fund of Jiangxi Province Key Laboratory of Synthetic Chemistry(No.JXSC202001)Innovation Capacity Enhancement Projects of Hebei Province(No.22567608H).
文摘Aqueous zinc-ion batteries(AZIBs)have attracted significant attention due to their high energy density,low cost,high efficiency,and environmental friendliness.Nevertheless,the development of AZIBs has been significantly hindered by the unavoidable issues with zinc dendrites and the side reactions of the anode.The strategies for stable and controllable interfacial regulation have recently made rapid progress,due to their dual function of improving zinc ion transport dynamics and preventing direct contact of zinc with electrolytes.Therefore,it's imperative to conduct a comprehensive summary of the interfacial regulation of zinc anodes and to engage in in-depth research into the underlying mechanisms.Subsequently,the interfacial regulation was classified based on battery structure,including anode coating strategy,electrolyte engineering,and separator optimization.Eventually,the current limitations of interfacial regulation and a deep outlook on AZIBs interface engineering are summarized.
文摘The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries(AZIBs). These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose(Xylo) molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn^(2+)ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.
基金supported by the National Natural Science Foundation of China(Nos.52072136,51972257,51872104,and 52172229)Hubei Key Laboratory of Biomass Fibers&Eco-Dyeing&Finishing(Wuhan Textile University)(Nos.STRZ202225,and STRZ202406).
文摘Hydrogels based on Deep Eutectic Solvents(DES)demonstrate remarkable anti-freezing,resilience,and toughness,presenting a promising avenue to the operation of aqueous zincion batteries under extreme conditions.A gel electrolyte capable of operating over a wide temperature range is developed based on a DES comprising 1 mol/kg(m)Zn(ClO_(4))_(2)+3.5 m Mg(ClO_(4))_(2).Spectral characterization confirms the synergistic influence of both anions and cations on the freezing point of the DES.With four hydrogen bond(HB)acceptors,Mg^(2+) exhibits strong electrostatic attraction towards the O atoms of H_(2)O,while ClO_(4)^(-)forms numerous HBs with H_(2)O molecules.This dual interaction allows for precise adjustment of the chemical environment around the H and O atoms of H_(2)O,resulting in an exceptionally low freezing point of-116.92℃for the DES.The gel electrolyte derived from this DES demonstrates an impressive ionic conductivity of 0.285 mS/cm at-70℃.Leveraging its excellent low-temperature performance and compatibility with a zinc anode,the flexible Zn-Mn battery constructed with this electrolyte exhibits robust electrochemical performance at low temperatures.Specifically,at-70℃,it achieves a high specific capacity of 76.83 mAh/g,displays excellent rate capability,andmaintains stable cycling performance.Moreover,the Zn-Mn battery operates reliably across a broad temperature range from-70 to 80℃.This study presents innovative insights for advancing Zn-Mn batteries capable of efficient operation across diverse environmental conditions,thereby opening new avenues for their development.
基金financial support by the National Natural Science Foundation of China(22371010,21771017 and 51702009)the“Hundred Talents Program”of the Chinese Academy of Science,Fundamental Research Funds for the Central Universities,Shenzhen Science and Technology Program(JCYJ20210324115412035 JCYJ2021-0324123202008,JCYJ20210324122803009 and ZDSYS20210813095534001)Guangdong Basic and Applied Basic Research Foundation(2021A1515110880).
文摘Common anode materials in aqueous alkaline electrolytes,such as cadmium,metal hydrides and zinc,usually suffer from remarkable biotoxicity,high cost,and serious side reactions.To overcome these problems,we develop a conjugated porous polymer(CPP)in-situ grown on reduced graphene oxide(rGO)and Ketjen black(KB),noted as C_(4)N/rGO and C_(4)N/KB respectively,as the alternative anodes.The results show that C_(4)N/rGO electrode delivers a low redox potential(−0.905 V vs.Ag/AgCl),high specific capacity(268.8 mAh g^(-1) at 0.2 A g^(-1)),ultra-stable and fast sodium ion storage behavior(216 mAh g^(-1) at 20 A g^(-1))in 2 M NaOH electrolyte.The assembled C_(4)N/rGO//Ni(OH)_(2) full battery can cycle stably more than 38,000 cycles.Furthermore,by adding a small amount of antifreeze additive dimethyl sulfoxide(DMSO)to adjust the hydrogen bonding network,the low-temperature performance of the electrolyte(0.1 DMSO/2 M NaOH)is significantly improved while hydrogen evolution is inhibited.Consequently,the C_(4)N/rGO//Ni(OH)_(2) full cell exhibits an energy density of 147.3 Wh Kg^(-1) and ultra-high cycling stability over a wide temperature range from−70 to 45℃.This work provides an ultra-stable high-capacity CPPbased anode and antifreeze electrolyte for aqueous alkaline batteries and will facilitate their practical applications under extreme conditions.
基金financially supported by the National Natural Science Foundation of China(52201259,52202286,52002094)the Education Department of Liaoning Province(JYTQN2023285)+5 种基金the Shenyang University of Technology(QNPY202209-4)the Key Laboratory of Functional Inorganic Material Chemistry(Heilongjiang University,Ministry of Education)the Science and Technology Department of Liaoning Province(2024-BSLH-172,JYTMS20231216)the Natural Science Foundation of Zhejiang Province(LY24B030006)the Science and Technology Plan Project of Wenzhou Municipality(ZG2024055)the Shenzhen Science and Technology Innovation Program(RCBS20210706092218040)。
文摘In the post-lithium-ion battery era,potassium-ion batteries(PIBs)show great potential due to their high energy density and economic competitiveness from abundant potassium resources.In comparison with traditional organic electrolytes,aqueous electrolytes bring lower costs,higher safety,and more environmentally friendly preparation processes for PIBs.Against this background,aqueous PIBs(APIBs)have gradually become a research hotspot in the past few years.Cathodes,a critical component of APIBs,directly affect energy density,safety,and stability.Herein,this review systematically summarizes the research progress of typical APIB cathode materials,some breakthrough investigations of which are highlighted.Meanwhile,material synthesis methods,electrolyte design strategies,electrochemical performance optimization pathways,and electrochemical reaction mechanisms are introduced briefly.Finally,the current challenges and corresponding improvement strategies are proposed to provide a reference for further development.
基金supported by the Natural Science Foundation of China(Nos.52125202,52202100,and U24A2065)the Natural Science Foundation of Jiangsu Province(BK20243016)Fundamental Research Funds for the Central Universities,China Postdoctoral Science Foundation(No.2024T171166).
文摘Aqueous zinc-ion batteries(AZIBs)have garnered considerable attention as promising post-lithium energy storage technologies owing to their intrinsic safety,cost-effectiveness,and competitive gravimetric energy density.However,their practical commercialization is hindered by critical challenges on the anode side,including dendrite growth and parasitic reactions at the anode/electrolyte interface.Recent studies highlight that rational electrolyte structure engineering offers an effective route to mitigate these issues and strengthen the electrochemical performance of the zinc metal anode.In this review,we systematically summarize state-of-the-art strategies for electrolyte optimization,with a particular focus on the zinc salts regulation,electrolyte additives,and the construction of novel electrolytes,while elucidating the underlying design principles.We further discuss the key structure–property relationships governing electrolyte behavior to provide guidance for the development of next-generation electrolytes.Finally,future perspectives on advanced electrolyte design are proposed.This review aims to serve as a comprehensive reference for researchers exploring high-performance electrolyte engineering in AZIBs.
基金supported by the National Natural Science Foundation of China(52002297)National Key R&D Program of China(2022VFB2404800)+1 种基金Wuhan Yellow Crane Talents Program,China Postdoctoral Science Foundation(No.2024M752495)the Postdoctoral Fellowship Program of CPSF(No.GZB20230552).
文摘Aqueous alkali metal-ion batteries(AAMIBs)have been recognized as emerging electrochemical energy storage technologies for grid-scale applications owning to their intrinsic safety,cost-effectiveness,and environmental sustainability.However,the practical application of AAMIBs is still severely constrained by the tendency of aqueous electrolytes to freeze at low temperatures and decompose at high temperatures,limiting their operational temperature range.Considering the urgent need for energy systems with higher adaptability and resilience at various application scenarios,designing novel electrolytes via structure modulation has increasingly emerged as a feasible and economical strategy for the performance optimization of wide-temperature AAMIBs.In this review,the latest advancement of wide-temperature electrolytes for AAMIBs is systematically and comprehensively summarized.Specifically,the key challenges,failure mechanisms,correlations between hydrogen bond behaviors and physicochemical properties,and thermodynamic and kinetic interpretations in aqueous electrolytes are discussed firstly.Additionally,we offer forward-looking insights and innovative design principles for developing aqueous electrolytes capable of operating across a broad temperature range.This review is expected to provide some guidance and reference for the rational design and regulation of widetemperature electrolytes for AAMIBs and promote their future development.
基金the fundamental Research Funds for the central Universities(x2wjD2240360)for the funding supportMeanwhile,Engineering and Physical Sciences Research Council(EPSRC,EP/V027433/3)+2 种基金UK Research and Innovation(UKRI)under the UK government’s Horizon Europe funding(101077226,EP/Y008707/1)Faraday Institution(EP/S003053/1)Degradation project(FIRG001),Royal Society(IEC\NSFC\233361),QUB Agility Fund and Wright Technology and Research Centre(W-Tech,R5240MEE)Funding from UK aid from the UK Government through the Faraday Institution and the Transforming Energy Access Programme(Grant number FIRG050-Device engineering of Zn-based hybrid micro-flow batteries and by-product H2 collection for Emerging Economies)。
文摘Aqueous zinc metal batteries(AZMBs)face significant challenges in achieving reversibility and cycling stability,primarily due to hydrogen evolution reactions(HER)and zinc dendrite growth.In this study,by employing carefully designed cells that approximate the structural characteristics of practical batteries,we revisit this widely held view through in-operando X-ray radiography to examine zinc dendrite formation and HER under nearpractical operating conditions.While conventional understanding emphasizes the severity of these processes,our findings suggest that zinc dendrites and HER are noticeably less pronounced in dense,real-operation configurations compared to modified cells,possibly due to a more uniform electric field and the suppression of triple-phase boundaries.This study indicates that other components,such as degradation at the cathode current collector interface and configuration mismatches within the full cell,may also represent important barriers to the practical application of AZMBs,particularly during the early stages of electrodeposition.
基金financially supported by the National Natural Science Foundation of China (21622303, 21333002, 21805126)National Key Research and Development Plan (2016YFB0901500, 2016YFA0203302)
文摘As an effective energy storage technology, rechargeable batteries have long been considered as a promising solution for grid integration of intermittent renewables(such as solar and wind energy). However,their wide application is still limited by safety issue and high cost. Herein, a new battery chemistry is proposed to satisfy the requirements of grid energy storage. We report a simple Cu-Mn battery, which is composed of two separated current collectors in an H2SO4-CuSO4-MnSO4 electrolyte without using any membrane. The Cu-Mn battery shows an energy density of 40.8 Wh L-1, a super-long life of 10,000 cycles(without obvious capacity decay) and negligible self-discharge. And the capital cost of US$ 11.9 kWh-1 based on electrolyte is lower than any previous batteries. More importantly, the battery can still work smoothly during thermal abuse test and drill-through test, showing high safe nature. Furthermore, a combination system integrating the Cu-Mn battery and hydrogen evolution is also proposed, which is able to avoid the generation of explosive H2/O2 mixture, and presents an efficient approach for grid energy storage and conversion.
基金supported by the China Postdoctoral Science Foundation(2018 M630340,2019 T120254)the Fundamental Research Funds for the Central University
文摘Aqueous Mg ion batteries(AMIBs)show great potential in energy storage for their advantages of high capacity,abundant resource,and environmental friendliness.However,the development of AMIBs is limited due to the scarcity of suitable anode materials.In this study,a new polymer anode material(PNTAQ)with flower-like nanosheet structure is synthesized for aqueous Mg-Na hybrid-ion battery(AMNHIB).PNTAQ possess carbonyl functional groups which can be oxidized and reduced reversibly in aqueous solution containing alkaline metal ions.PNTAQ displays a discharge specific capacity of 245 mAh g^(−1)at 50 mA g^(−1)in 1 M MgCl_(2)+0.5 M NaCl electrolyte,which is much higher than that in single 1 M MgCl_(2)or 0.5 M NaCl electrolyte.Even cycling at 1000 mA g^(−1)for 1000 times,the capacity retention can still maintain at 87.2%.A full Mg-Na hybrid-ion cell is assembled by employingβ-MnO_(2)as cathode and PNTAQ as anode material,it exhibits a specific capacity of 91.6 mAh g^(−1)at 100 mA g^(−1).The polymer electrode material well maintains its framework structure during the discharge/charge cycling process of the hybrid-ion battery.
基金supported by West Light Foundation of The Chinese Academy of Sciences(XAB2019AW09)Singapore Ministry of Education Tier 1 grants(RG 10/18,RG 157/19)。
文摘Aqueous Zn-ion battery(AZIB)has become an attractive technology because of its unique features of low cost,high safety and the eco-friendliness.MnO_(2) is the model cathode material for AZIB since the first report on reversible Zn-MnO_(2) battery,but recent studies have unveiled different charge storage mechanisms.Due to revamping of the electrochemistry and redesigning of the electrolyte and interface,there is tremendous performance enhancement in AZIB.This mini Review will first give a brief introduction of ZIB,including fundamentals of materials and components,and the progress in recent years.Then,a general classification of working mechanisms related to MnO_(2) in neutral and mildly acidic electrolyte is elaborated.Our focus is put on the recent blossoming Zn-MnO_(2) electrolytic mechanism,which has given birth to the Zn-MnO_(2) redox flow batteries that are highly promising for large-scale static energy storage.
基金supported by National Natural Science Foundation of China (No. 51871107, 52130101)Chang Jiang Scholar Program of China (Q2016064)+3 种基金the Program for JLU Science and Technology Innovative Research Team (JLUSTIRT, 2017TD-09)the Natural Science Foundation of Jilin Province (20200201019JC)the Fundamental Research Funds for the Central Universitiesthe Program for Innovative Research Team (in Science and Technology) in University of Jilin Province
文摘Metallic zinc(Zn)is one of the most attractive multivalent-metal anode materials in post-lithium batteries because of its high abundance,low cost and high theoretical capacity.However,it usually suffers from large voltage polarization,low Coulombic efficiency and high propensity for dendritic failure during Zn stripping/plating,hindering the practical application in aqueous rechargeable zinc-metal batteries(AR-ZMBs).Here we demonstrate that anionic surfactant-assisted in situ surface alloying of Cu and Zn remarkably improves Zn reversibility of 3D nanoporous Zn electrodes for potential use as high-performance AR-ZMB anode materials.As a result of the zincophilic ZnxCuy alloy shell guiding uniform Zn deposition with a zero nucleation overpotential and facilitating Zn stripping via the ZnxCuy/Zn galvanic couples,the self-supported nanoporous ZnxCuy/Zn electrodes exhibit superior dendrite-free Zn stripping/plating behaviors in ambient aqueous electrolyte,with ultralow polarizations under current densities up to 50 mA cm^(‒2),exceptional stability for 1900 h and high Zn utilization.This enables AR-ZMB full cells constructed with nanoporous ZnxCuy/Zn anode and K_(z)MnO_(2)cathode to achieve specific energy of as high as~430 Wh kg^(‒1)with~99.8%Coulombic efficiency,and retain~86%after long-term cycles for>700 h.
基金supported by the Institute for Basic Science,south korea(IBS-R006-A2)supproted by the Basic Science Research Program through the National Research Foundation of Korea(NRF),south korea funded by the Ministry of Education(2018R1D1A3B05042787)+1 种基金supported by the National Research Foundation of Korea(NRF),south korea grant funded by the Korea Government(MSIT)(RS-2025-00518953)the National Research Foundation of Korea(NRF),south korea grant funded by the Korea Government(MSIT)(RS-202400422387)。
文摘Aqueous batteries,renowned for their cost-effectiveness and non-flammability,have attracted considerable attention in the realm of batteries featuring Zn-based and Sn-based configurations.These configurations employ Zn and Sn metal anodes,respectively.While the growth patterns of Zn under various current densities have been extensively studied,there has been a scarcity of research on Sn dendrite growth.Our operando imaging analysis reveals that,unlike Zn,Sn forms sharp dendrites at high current density emphasizing the crucial necessity for implementing strategies to suppress the dendrites formation.To address this issue,we introduced a carbon nanotube(CNT)layer on copper foil,effectively preventing the formation of Sn dendrites under high current density,thus enabling the high-current operation of Sn metal batteries.We believe that our work highlights the importance of suppressing dendrite formation in aqueous Sn metal batteries operating at high current density and introduces a fresh perspective on mitigating Sn dendrite formation.
基金financially supported by the National Natural Scientific Foundation of China(Nos.52371211 and 52171200)Changsha Special Project(No.kh2301006)the Natural Science Foundation of Shandong Province(No.ZR2024QB185)
文摘Aqueous ammonium batteries(AAIBs)gain extensive attention because of their merits,such as costeffectiveness,eco-friendliness,and safety.Nevertheless,the limited research on electrode materials impedes their further development.Here,we prepare Cu_(x)O(x=1,2)materials and apply them as cathode materials for AAIBs.The electrodes have a high discharge-specific capacity and a long and stable charge-discharge plateau.In accordance with density functional theory,the mechanism of NH_(4)^(+)storage involves the reversible formation and breaking of hydrogen bonds.Simultaneously,CuO contributes additional electrons and facilitates the rearrangement of internal electrons,thereby enhancing the storage performance of NH_(4)^(+).To further improve the chemical reaction kinetics and address the limited cycle stability of CuO,a compositematerial composed of CuO and carbon(CuO/C)is developed.The findings demonstrate that CuO/C exhibits superior rate capability,with an initial discharge-specific capacity reaching 1851 mAh g^(-1)(0.1 A g^(-1))and improved reversible cycle performance(113 mAh g^(-1)after 400cycles).This study investigates the application of CuO as the cathode material in AAIBs and presents new opportunities for future industrial development.
