Lithium-ion batteries are widely recognized as prime candidates for energy storage devices.Ethylene carbonate(EC)has become a critical component in conventional commercial electrolytes due to its exceptional film-form...Lithium-ion batteries are widely recognized as prime candidates for energy storage devices.Ethylene carbonate(EC)has become a critical component in conventional commercial electrolytes due to its exceptional film-forming properties and high dielectric constant.However,the elevated freezing point,high viscosity,and strong solvation energy of EC significantly hinder the transport rate of Li^(+)and the desolvation process at low temperatures.This leads to substantial capacity loss and even lithium plating on graphite anodes.Herein,we have developed an efficient electrolyte system specifically designed for lowtemperature conditions,which consists of 1.0 M lithium bis(fluorosulfonyl)imide(LiFSI)in isoxazole(IZ)with fluorobenzene(FB)as an uncoordinated solvent and fluoroethylene carbonate(FEC)as a filmforming co-solvent.This system effectively lowers the desolvation energy of Li^(+)through dipole-dipole interactions.The weak solvation capability allows more anions to enter the solvation sheath,promoting the formation of contact ion pairs(CIPs)and aggregates(AGGs)that enhance the transport rate of Li^(+)while maintaining high ionic conductivity across a broad temperature range.Moreover,the formation of inorganic-dominant interfacial phases on the graphite anode,induced by fluoroethylene carbonate,significantly enhances the kinetics of Li^(+)transport.At a low temperature of-20℃,this electrolyte system achieves an impressive reversible capacity of 200.9 mAh g^(-1)in graphite half-cell,which is nearly three times that observed with conventional EC-based electrolytes,demonstrating excellent stability throughout its operation.展开更多
Solvated zinc ions are prone to undergo desolvation at the electrode/electrolyte interfaces,and unstable H_(2)O molecules within the solvated sheaths tend to trigger hydrogen evolution reaction(HER),further accelerati...Solvated zinc ions are prone to undergo desolvation at the electrode/electrolyte interfaces,and unstable H_(2)O molecules within the solvated sheaths tend to trigger hydrogen evolution reaction(HER),further accelerating interfaces decay.Herein,we propose for the first time a novel strategy to enhance the interfacial stabilities by insitu dynamic reconstruction of weakly solvated Zn2þduring the desolvation processes at heterointerfaces.Theoretical calculations indicate that,due to built-in electric field effects(BEFs),the plating/stripping mechanism shifts from[Zn(H_(2)O)_(6)]_(2)þto[Zn(H_(2)O)_(5)(SO_(4))^(2-)]_(2)þwithout additional electrolyte additives,reducing the solvation ability of H_(2)O,enhancing the competitive coordination of SO_(4)^(2-),essentially eliminating the undesirable side effects of anodes.Hence,symmetric cells can operate stably for 3000 h(51.7-times increase in cycle life),and the full cells can operate stably for 5000 cycles(51.5-times increase in cycle life).This study provides valuable insights into the critical design of weakly solvated Zn^(2+) þand desolvation processes at heterointerfaces.展开更多
Currently,although some progress has been made in infancy-stage rocking-chair aqueous zinc-ion batteries(AZIBs),more discussions have focused only on the different electrochemical performances displayed by different m...Currently,although some progress has been made in infancy-stage rocking-chair aqueous zinc-ion batteries(AZIBs),more discussions have focused only on the different electrochemical performances displayed by different material types rather than the intrinsic ion transport migration electrochemistry.Herein,we for the first time delve into the mechanism of tailoring the solvation sheath and desolvation processes at the electrode/electrolyte interfaces to enhance the structural stabilities in the deep discharge states.In this work,the TiO_(2)front interfaces are induced on electrochemically active but unstable TiSe_(2)host materials to construct unique TiO_(2)/TiSe_(2)-C heterointerfaces.According to X-ray absorption near edge structure(XANES),differential electrochemical mass spectrometry(DEMS),and electrochemical quartz crystal microbalance(EQCM),the intercalated species are transformed from[Zn(H_(2)O)_(6)]^(2+)to[Zn(H_(2)O)_(2)]^(2+)due to the built-in electric fields(BEFs)effects,further accelerating the ion transfer kinetics.Furthermore,owing to the absence of high-energy desolvation solvents released from desolvation processes,hydrogen evolution reaction(HER)energy barriers,Ti-Se bond strength,and structural stabilities are significantly improved,and the initial CE and HER overpotentials of the TiO_(2)/TiSe_(2)-C heterointerfaces increased from 13.76%to 84.7%,and from 1.04 to 1.30 V,respectively,and the H2 precipitation current density even at-1.3 V decreased by 73.2%.This work provides valuable insights into the complex interface electrochemical mechanism of tailoring the solvation sheath and desolvation processes toward rocking-chair zinc-ion batteries.展开更多
Designing anion-dominated weak solvation structures is often achieved by elevating the concentration of Li salts.However,this is accompanied by the increase in the cost.Herein,a medium concentration electrolyte (1 M) ...Designing anion-dominated weak solvation structures is often achieved by elevating the concentration of Li salts.However,this is accompanied by the increase in the cost.Herein,a medium concentration electrolyte (1 M) with weak solvation structures is established by the multi-anion strategy.Multiple anions in the electrolyte strengthen the anion-solvent interactions through stronger ion–dipole interactions.This reduces the quantity of free solvent and improves the reduction resistance of solvents.In addition,the Li ion–solvent interaction is weakened,facilitating the anions to enter the solvation sheaths of Li ions.This multi-anion-dominated weak solvation structures boost Li ion diffusion in the electrolyte,accelerate the desolvation process of Li ions,and induce inorganic-rich solid electrolyte interphase and uniform Li deposition.An average Coulombic efficiency of 99.1%for repeated Li plating/stripping can be achieved.Li||LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cells with a high cathode loading of 3.0 m A h cm^(-2) can maintain a capacity retention as high as 95% after 150 cycles.This finding provides novel standpoints to modulate the interaction of solvation structures and extend the lifespan of high-energy–density Li metal batteries.展开更多
Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of...Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of[Zn(H2O)6]^(2+)and the massive release of active water at the electrolyte/electrode interface.In this review,we briefly outline the solvation structure of zinc ions and the necessity of desolvation.Subsequently,the variety of strategies to solve these issues,mainly including reorganizing solvation sheath by changing electrolyte environment and accelerating interface desolvation by constructing artificial interfacial layer,are categorically discussed and systematically summarized.Meanwhile,perspectives and suggestions regarding desolvation theories,interfacial evolution,material design and analysis techniques are proposed to design highly stable zinc anodes.展开更多
The development of aqueous zinc-ion batteries is crucial for advancing sustainable energy storage technologies.However,their widespread application is hindered by Zn corrosion and uncontrolled Zn dendrite growth.One p...The development of aqueous zinc-ion batteries is crucial for advancing sustainable energy storage technologies.However,their widespread application is hindered by Zn corrosion and uncontrolled Zn dendrite growth.One promising approach involves creating a functional organic-inorganic interface on the Zn surface.Traditional binders,such as polyvinylidene fluoride(PVDF),fail to regulate water activity and ion migration,limiting the effectiveness of the interface.Herein,we introduce an aqueous dual ionic/electronic conducting binder,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS),to build a water-scarce,Zn^(2+)-enriched interface.Our findings demonstrate that PEDOT:PSS not only facilitates uniform distribution of inorganic fillers,forming a cohesive and compact interface,but also significantly enhances mechanical integrity.Additionally,the sulfonate groups within the binder matrix disrupt the hydrogen bond network of water molecules,reducing water activity and lowering the desolvation energy barrier of Zn(H_(2)O)_(6)^(2+)clusters.Therefore,the transference number of Zn^(2+)is elevated to 0.81(compared to 0.61 with PVDF),mitigating undesirable side reactions and enabling dendrite-less Zn deposition.Consequently,symmetrical Zn||Zn cells with PEDOT:PSS binder demonstrate a lifetime with 4.2 times longer than those with PVDF.This work underscores the critical role of binder chemistry in stabilizing metal anodes for aqueous batteries.展开更多
Lithium metal has emerged as a highly promising anode material for enhancing the energy density of secondary batteries,attributed to its high theoretical specific capacity and low electrochemical potential.However,saf...Lithium metal has emerged as a highly promising anode material for enhancing the energy density of secondary batteries,attributed to its high theoretical specific capacity and low electrochemical potential.However,safety concerns related to lithium dendrite-induced short circuits and suboptimal electrochemical performance have impeded the commercial viability of lithium metal batteries.Current research efforts primarily focus on altering the solvated structure of Li+by modifying the current collector or introducing electrolyte additives to lower the nucleation barrier,expedite the desolvation process,and suppress the growth of lithium dendrites.Nevertheless,an integrated approach that combines the advantages of these two strategies remains elusive.In this study,we successfully employed metal-organic salt additives with lithophilic properties to accelerate the desolvation process,reduce the nucleation barrier of Li+,and modulate its solvated structure.This approach enhanced the inorganic compound content in the solid electrolyte interphase(SEI)on lithium foil surfaces,leading to stable Li+deposition and stripping.Specifically,Li||Cu cells demonstrated excellent cycle life and Coulombic efficiency(97.28%and 98.59%,respectively)at 0.5 m A/cm^(2)@0.5 m Ah/cm^(2)and 1 m A/cm^(2)@1 m Ah/cm^(2)for 410 and 240 cycles,respectively.Li||Li symmetrical cells showed no short circuit at 1 m A/cm^(2)@1 m Ah/cm^(2)for 1150 h,and Li||LFP full cells retained 68.9%of their capacity(104.6 m Ah/g)after 250 cycles at N/P(1.1:1.0)with a current density of 1C.展开更多
Ni-ion aqueous batteries(NIBs)were considered an important development direction for aqueous batteries due to the high theoretical capacity(913 mA h g^(-1))and volume capacity(8136 mA h cm^(-3))of nickel metal.Herein,...Ni-ion aqueous batteries(NIBs)were considered an important development direction for aqueous batteries due to the high theoretical capacity(913 mA h g^(-1))and volume capacity(8136 mA h cm^(-3))of nickel metal.Herein,an electrolyte additive(dodecyl trimethyl ammonium chloride,DTAC)was used to improve the electrolyte environment,achieve efficient transport of Ni-ion,and combine the intercalated vanadium oxide cathodes to realize novel strategy NIBs.Firstly,the introduction of trace amounts of DTAC improved the high-concentration NiCl_(2)(4.2 M)electrolyte environment and reconstructed the hydrogen bond network.Molecular dynamics(MD)calculations and electrochemical results indicated that DTAC contributed to the desolvation process of Ni^(2+)and the realization of fast dynamics.The results of Ni symmetric cells demonstrated that DTAC enhanced the rapid migration of Ni-ion and achieved longer cycling stability(1750/1500 h at 0.2/0.5 mA cm^(-2)without obvious short circuits).Secondly,the insertion of organic small molecules(pyrrolidine)into vanadium oxide(V_(2)O_(5))to expand the interlayer spacing promoted the Ni-ion storage capacity of the cathodes.The capacity retention rate of Ni full battery after 6000 cycles at 5 A g^(-1)reached 82.17%.This work provided a novel strategy for the development of Ni-ion aqueous batteries.展开更多
Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable gr...Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable growth of Zn dendrite and severe side reactions including hydrogen evolution reaction,corrosion,and passivation,etc.Herein,an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups(COF-S-F)is developed on Zn metal(Zn@COF-S-F)as the artificial solid electrolyte interface(SEI).Sulfonic acid group(-SO_(3)H)in COF-S-F can effectively ameliorate the desolvation process of hydrated Zn ions,and the three-dimensional channel with fluoride group(-F)can provide interconnected channels for the favorable transport of Zn ions with ion-confinement effects,endowing Zn@COF-S-F with dendrite-free morphology and suppressed side reactions.Consequently,Zn@COF-S-F symmetric cell can stably cycle for 1,000 h with low average hysteresis voltage(50.5 m V)at the current density of 1.5 m A cm^(-2).Zn@COF-S-F|Mn O_(2)cell delivers the discharge specific capacity of 206.8 m Ah g^(-1)at the current density of 1.2 A g^(-1)after 800 cycles with high-capacity retention(87.9%).Enlightening,building artificial SEI on metallic Zn surface with targeted design has been proved as the effective strategy to foster the practical application of high-performance AZIBs.展开更多
Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety,cost-effectiveness,and high capacity.However,the service life of zinc metal anodes is severely constrain...Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety,cost-effectiveness,and high capacity.However,the service life of zinc metal anodes is severely constrained by critical challenges,including dendrites,water-induced hydrogen evolution,and passivation.In this study,a protective two-dimensional metal–organic framework interphase is in situ constructed on the zinc anode surface with a novel gel vapor deposition method.The ultrathin interphase layer(~1μm)is made of layer-stacking 2D nanosheets with angstrom-level pores of around 2.1Å,which serves as an ion sieve to reject large solvent–ion pairs while homogenizes the transport of partially desolvated zinc ions,contributing to a uniform and highly reversible zinc deposition.With the shielding of the interphase layer,an ultra-stable zinc plating/stripping is achieved in symmetric cells with cycling over 1000 h at 0.5 mA cm−2 and~700 h at 1 mA cm^(−2),far exceeding that of the bare zinc anodes(250 and 70 h).Furthermore,as a proof-of-concept demonstration,the full cell paired with MnO_(2) cathode demonstrates improved rate performances and stable cycling(1200 cycles at 1 A g−1).This work provides fresh insights into interphase design to promote the performance of zinc metal anodes.展开更多
Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero temperatures.Such failure behavior highly correlates to inferio...Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero temperatures.Such failure behavior highly correlates to inferior lithium metal anode(LMA) compatibility and sluggish Li^(+) desolvation.Here,we demonstrate that cyclopentylmethyl ether(CPME) based diluted high-concentration electrolyte(DHCE)enables-60℃ LMBs operation.By leveraging the loose coordination between Li^(+) and CPME,such developed electrolyte boosts the formation of ion clusters to derive anion-dominant interfacial chemistry for enhancing LMA compatibility and greatly accelerates Li^(+) desolvation kinetics.The resulting electrolyte demonstrates high Coulombic efficiencies(CE),providing over 99.5%,99.1%,98.5% and 95% at 25,-20,-40,and-60℃respectively.The assembled Li-S battery exhibits remarkable cyclic stability in-20,and-40℃ at 0.2 C charging and 0.5 C discharging.Even at-60℃,Li-S cell with this designed electrolyte retains> 70% of the initial capacity over 170 cycles.Besides,lithium metal coin cell and pouch cell with10 mg cm^(-2) high S cathode loading exhibit cycling stability at-20℃.This work offers an opportunity for rational designing electrolytes toward low temperature LMBs.展开更多
Determination of thirty four trace metal elements in electronic high purity hydrochloric acid by ICP-MS (Standard Condition, Plasma Screen Condition) with membrane desolvation was described. Matrix effects were compen...Determination of thirty four trace metal elements in electronic high purity hydrochloric acid by ICP-MS (Standard Condition, Plasma Screen Condition) with membrane desolvation was described. Matrix effects were compensated by adding rhodium as the internal standard. Detection limits is 0.1 to 100 ng/L; the recovery of the method is 90%-110%. Long term RSD was less than 5%. The results from ICP and ICP-MS are correspondent. ICP-MS improves the accuracy and efficiency of analyses.展开更多
This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry （MPT-AES） coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafio...This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry （MPT-AES） coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafion dryer, was used as the substitute for condenser desolvation system. Some experimental conditions, such as preconcentration time, acidity of sample solution, rinsing solution acidity and dynamic linear range were investigated and optimized. The new desolvation system eliminates the problem of decreasing emission intensity of I（I） 206.238 nm line with the increase of working time on a conventional condenser desolvation system, thus greatly improving the reproducibility.展开更多
The practical application of Li metal anodes(LMAs)is limited by uncontrolled dendrite growth and side reactions.Herein,we propose a new friction-induced strategy to produce high-performance thin Li anode(Li@CFO).By vi...The practical application of Li metal anodes(LMAs)is limited by uncontrolled dendrite growth and side reactions.Herein,we propose a new friction-induced strategy to produce high-performance thin Li anode(Li@CFO).By virtue of the in situ friction reaction between fluoropolymer grease and Li strips during rolling,a robust organic/inorganic hybrid interlayer(lithiophilic LiF/LiC_(6)framework hybridized-CF_(2)-O-CF_(2)-chains)was formed atop Li metal.The derived interface contributes to reversible Li plating/stripping behaviors by mitigating side reactions and decreasing the solvation degree at the interface.The Li@CFO||Li@CFO symmetrical cell exhibits a remarkable lifespan for 5,600 h(1.0 mA cm^(-2)and 1.0 mAh cm^(-2))and 1,350 cycles even at a harsh condition(18.0 mA cm^(-2)and 3.0 mAh cm^(-2)).When paired with high-loading LiFePO4 cathodes,the full cell lasts over 450 cycles at 1C with a high-capacity retention of 99.9%.This work provides a new friction-induced strategy for producing high-performance thin LMAs.展开更多
The uncontrollable dendrites growth and intricately water-induced side reactions occurred on zinc anode leads to safety issues and poor electrochemical kinetics,which largely limit the widespread application of zinc-i...The uncontrollable dendrites growth and intricately water-induced side reactions occurred on zinc anode leads to safety issues and poor electrochemical kinetics,which largely limit the widespread application of zinc-ion batteries(ZIBs).Herein,ethylenediaminetetraacetic acid disodium salt(EDTA-2Na)is utilized as an electrolyte additive to strengthen the reversibility and cycling stability of zinc anode.Experimental results and theoretical calculation demonstrate that the EDTA-2Na presents a much stronger coordination with Zn^(2+)when comparing with H_(2)O molecular,implying the EDTA-2Na is capable to enter the solvation shell of[Zn(OH_(2))_(6)]^(2+)and coordinate with Zn^(2+)ions,thus achieving a flat and smooth zinc deposition with less by-products(Zn_(4)SO_(4)(OH)6·xH_(2)O and H_(2)).Consequently,the zinc symmetric battery with EDTA-2Na additive delivers an excellent cycling stability up to 1800 h under current density of 1 mA cm^(-2),and the hydrogen evolution reaction(HER),corrosion,by-product issues are significantly inhibited.Moreover,the rate performance and stability of coin-type and pouch-type Zn||MnO2/graphite batteries are significantly boosted via EDTA-2Na additive(248 mAh g^(-1)at 0.1 A g^(-1),81.3%after 1000 cycles at a A g^(-1)).This kind of electrolyte additive with chelation and desolvation functions shed lights on strategies of improving zinc anode stability for further application of ZIBs.展开更多
Stibium(Sb)metal with high theoretic capacity,suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries(AABs).However,the further development of Sb an...Stibium(Sb)metal with high theoretic capacity,suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries(AABs).However,the further development of Sb anode is severely hindered by the low capacity and poor rate capability which is originated from deficient adsorption of[Sb(OH)_(4)]^(-)and its sluggish desolvation kinetics.Herein,a nitrogen doped carbon cages(NCCs)substrate is constructed as high capacity and rate capability anode by promoting the adsorption and following desolvation process of[Sb(OH)_(4)]^(-)via the enhanced attraction toward(OH)-in the solvated[Sb(OH)_(4)]^(-).Consequently,the designed Sb/NCCs anode delivers a high capacity of 627 m Ah g^(-1)with an average 95%Sb utilization,an outstanding coulombic efficiency(CE)of 95%and an impressive lifespan(>110 h).Meanwhile,the Ni_(3)Se_(2)//Sb/NCCs batteries show great capacity retention of 86.7%after 2000 cycles with an areal capacity of 0.52 m Ah cm^(-2).Implementation of the designed anode allows for the construction of Sb-based AABs with enhanced rate capability,energy density and cycling performance.展开更多
Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention.To solve the disadvantages of the traditional integrated system,such as highly dependent on energy s...Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention.To solve the disadvantages of the traditional integrated system,such as highly dependent on energy supply and complex structure,an airrechargeable Zn battery based on MoS_(2)/PANI cathode is reported.Benefited from the excellent conductivity desolvation shield of PANI,the MoS_(2)/PANI cathode exhibits ultra-high capacity(304.98 mAh g^(−1) in N_(2) and 351.25 mAh g^(−1) in air).In particular,this battery has the ability to collect,convert and store energy simultaneously by an airrechargeable process of the spontaneous redox reaction between the discharged cathode and O2 from air.The air-rechargeable Zn batteries display a high open-circuit voltage(1.15 V),an unforgettable discharge capacity(316.09 mAh g^(−1) and the air-rechargeable depth is 89.99%)and good air-recharging stability(291.22 mAh g^(−1) after 50 air recharging/galvanostatic current discharge cycle).Most importantly,both our quasi-solid zinc ion batteries and batteries modules have excellent performance and practicability.This work will provide a promising research direction for the material design and device assembly of the next-generation self-powered system.展开更多
The desolvation of erythromycin acetone solvate was investigated under non-isothermal conditions by a thermogravimetric analyzer. This paper emphasized the kinetic analysis of non-isothermal TG-DTA data by Achar metho...The desolvation of erythromycin acetone solvate was investigated under non-isothermal conditions by a thermogravimetric analyzer. This paper emphasized the kinetic analysis of non-isothermal TG-DTA data by Achar method and Coats-Redfern method to fit various solid-state reaction models, and to achieve kinetic parameters of desolvation. The mechanism of thermal desolvation was evaluated using the kinetic compensation effect. The results show that kinetics of desolvation of erythromycin acetone solvate was compatible with the mechanism of a two-dimensional diffusion controlled and was best expressed by Valensi equation. Corresponding to the integral method and the differential method, the activation energy of desolvation of erythromycin acetone solvate was estimated to be 51.26—57.11 kJ/mol, and the pre-exponential factor was 8.077×106 s-1—4.326×107 s-1, respectively.展开更多
The glycation of hemoglobin is catalyzed by buffer phosphate and arsenate. The catalytic constant （kB） for aqueous arsenate is two-fold larger than for aqueous phosphate. The catalytic constant （ks） of phosphate i...The glycation of hemoglobin is catalyzed by buffer phosphate and arsenate. The catalytic constant （kB） for aqueous arsenate is two-fold larger than for aqueous phosphate. The catalytic constant （ks） of phosphate in sorbitol mixtures increase from （1.67 ± 0.11） × 10-10 s-1·M-1 to （5.78 ± 0.39） × 10-10 s-1·M-1 and the catalytic constant is enhanced 3.5 times, relative to that in water; the catalytic constant （kB） of arsenate in sorbitol mixtures increase from （2.98±0.07）× 10-10 s-1·M-1 to （6.62 ± 0.53） × 10-10 s-1·M-1 and the catalytic constant is enhanced 2 times, relative to that in water. The spontaneous rate constants are independent of sorbitol concentration for phosphate and arsenate. The catalytic power of phosphate and arsenate in sorbitol are the same. Desolvation of strongly hydrated species such as HPO42 and HAsO42 should make a contribution to the energy cost of the formation of anion-hemoglobin complexes and can be a possible explanation for higher catalytic potential of HAsO42 in water. The same catalytic constant （ksB） for phosphate and arsenate in sorbitol indicates that the same catalyst base group on the hemoglobin molecule may be involved in the abstraction of proton in the Amadori rearrangement.展开更多
Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy density.However,the dendrite growth,hydrogen evolution reaction(HER)and corr...Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy density.However,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion devices.Here,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of Zn.Experimental and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side reactions.Consequently,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 cycles.Ex-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc dendrites.Additionally,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.展开更多
基金financial support from the Department of Science and Technology of Jilin Province(20240304104SF,20240304103SF)the Research and Innovation Fund of the Beihua University for the Graduate Student(Major Project 2023012)。
文摘Lithium-ion batteries are widely recognized as prime candidates for energy storage devices.Ethylene carbonate(EC)has become a critical component in conventional commercial electrolytes due to its exceptional film-forming properties and high dielectric constant.However,the elevated freezing point,high viscosity,and strong solvation energy of EC significantly hinder the transport rate of Li^(+)and the desolvation process at low temperatures.This leads to substantial capacity loss and even lithium plating on graphite anodes.Herein,we have developed an efficient electrolyte system specifically designed for lowtemperature conditions,which consists of 1.0 M lithium bis(fluorosulfonyl)imide(LiFSI)in isoxazole(IZ)with fluorobenzene(FB)as an uncoordinated solvent and fluoroethylene carbonate(FEC)as a filmforming co-solvent.This system effectively lowers the desolvation energy of Li^(+)through dipole-dipole interactions.The weak solvation capability allows more anions to enter the solvation sheath,promoting the formation of contact ion pairs(CIPs)and aggregates(AGGs)that enhance the transport rate of Li^(+)while maintaining high ionic conductivity across a broad temperature range.Moreover,the formation of inorganic-dominant interfacial phases on the graphite anode,induced by fluoroethylene carbonate,significantly enhances the kinetics of Li^(+)transport.At a low temperature of-20℃,this electrolyte system achieves an impressive reversible capacity of 200.9 mAh g^(-1)in graphite half-cell,which is nearly three times that observed with conventional EC-based electrolytes,demonstrating excellent stability throughout its operation.
基金financially supported by the National Natural Science Foundation of China(51977097).
文摘Solvated zinc ions are prone to undergo desolvation at the electrode/electrolyte interfaces,and unstable H_(2)O molecules within the solvated sheaths tend to trigger hydrogen evolution reaction(HER),further accelerating interfaces decay.Herein,we propose for the first time a novel strategy to enhance the interfacial stabilities by insitu dynamic reconstruction of weakly solvated Zn2þduring the desolvation processes at heterointerfaces.Theoretical calculations indicate that,due to built-in electric field effects(BEFs),the plating/stripping mechanism shifts from[Zn(H_(2)O)_(6)]_(2)þto[Zn(H_(2)O)_(5)(SO_(4))^(2-)]_(2)þwithout additional electrolyte additives,reducing the solvation ability of H_(2)O,enhancing the competitive coordination of SO_(4)^(2-),essentially eliminating the undesirable side effects of anodes.Hence,symmetric cells can operate stably for 3000 h(51.7-times increase in cycle life),and the full cells can operate stably for 5000 cycles(51.5-times increase in cycle life).This study provides valuable insights into the critical design of weakly solvated Zn^(2+) þand desolvation processes at heterointerfaces.
基金supported by the National Natural Science Foundation of China(51977097).
文摘Currently,although some progress has been made in infancy-stage rocking-chair aqueous zinc-ion batteries(AZIBs),more discussions have focused only on the different electrochemical performances displayed by different material types rather than the intrinsic ion transport migration electrochemistry.Herein,we for the first time delve into the mechanism of tailoring the solvation sheath and desolvation processes at the electrode/electrolyte interfaces to enhance the structural stabilities in the deep discharge states.In this work,the TiO_(2)front interfaces are induced on electrochemically active but unstable TiSe_(2)host materials to construct unique TiO_(2)/TiSe_(2)-C heterointerfaces.According to X-ray absorption near edge structure(XANES),differential electrochemical mass spectrometry(DEMS),and electrochemical quartz crystal microbalance(EQCM),the intercalated species are transformed from[Zn(H_(2)O)_(6)]^(2+)to[Zn(H_(2)O)_(2)]^(2+)due to the built-in electric fields(BEFs)effects,further accelerating the ion transfer kinetics.Furthermore,owing to the absence of high-energy desolvation solvents released from desolvation processes,hydrogen evolution reaction(HER)energy barriers,Ti-Se bond strength,and structural stabilities are significantly improved,and the initial CE and HER overpotentials of the TiO_(2)/TiSe_(2)-C heterointerfaces increased from 13.76%to 84.7%,and from 1.04 to 1.30 V,respectively,and the H2 precipitation current density even at-1.3 V decreased by 73.2%.This work provides valuable insights into the complex interface electrochemical mechanism of tailoring the solvation sheath and desolvation processes toward rocking-chair zinc-ion batteries.
基金funded by National Natural Science Foundation of China (22379072, 92372111, 22179070)the Startup Foundation for Introducing Talent of NUIST (2022r038)+1 种基金the Jiangsu Specially Appointed Professor Program, the Natural Science Foundation of Jiangsu Province (BK20220073)the Fundamental Research Funds for the Central Universities (RF1028623157)。
文摘Designing anion-dominated weak solvation structures is often achieved by elevating the concentration of Li salts.However,this is accompanied by the increase in the cost.Herein,a medium concentration electrolyte (1 M) with weak solvation structures is established by the multi-anion strategy.Multiple anions in the electrolyte strengthen the anion-solvent interactions through stronger ion–dipole interactions.This reduces the quantity of free solvent and improves the reduction resistance of solvents.In addition,the Li ion–solvent interaction is weakened,facilitating the anions to enter the solvation sheaths of Li ions.This multi-anion-dominated weak solvation structures boost Li ion diffusion in the electrolyte,accelerate the desolvation process of Li ions,and induce inorganic-rich solid electrolyte interphase and uniform Li deposition.An average Coulombic efficiency of 99.1%for repeated Li plating/stripping can be achieved.Li||LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2) cells with a high cathode loading of 3.0 m A h cm^(-2) can maintain a capacity retention as high as 95% after 150 cycles.This finding provides novel standpoints to modulate the interaction of solvation structures and extend the lifespan of high-energy–density Li metal batteries.
基金financially supported by the National Key Research and Development Program of China(2021YFA1201503)National Natural Science Foundation of China(No.21972164,22279161,and 22309144)+8 种基金the Natural Science Foundation of Jiangsu Province(BK.20210130)Shanghai Sailing Program of China(23YF1408900)China Postdoctoral Science Foundation(No.2024M762318,2023M731084,and 2023M732561)Suzhou Science and Technology Plan project(SYC2022057)Innovative and Entrepreneurial Doctor in Jiangsu Province(JSSCBS20211428)Opening funding from Key Laboratory of Engineering Dielectrics and Its Application(Harbin University of Science and Technology)(No.KFM202507,Ministry of Education)the funding provided by the Alexander von Humboldt Foundationthe Shanghai Super Postdoctoral Incentive Programthe support from Nano-X,Suzhou Institute of Nano-tech and Nano-bionics,Chinese Academy of Sciences.
文摘Aqueous zinc-metal based batteries(AZMBs)perfectly combine safety,economy and pro-environment,but their performance is arresting limited by the interfacial instability caused by the large desolvation energy barrier of[Zn(H2O)6]^(2+)and the massive release of active water at the electrolyte/electrode interface.In this review,we briefly outline the solvation structure of zinc ions and the necessity of desolvation.Subsequently,the variety of strategies to solve these issues,mainly including reorganizing solvation sheath by changing electrolyte environment and accelerating interface desolvation by constructing artificial interfacial layer,are categorically discussed and systematically summarized.Meanwhile,perspectives and suggestions regarding desolvation theories,interfacial evolution,material design and analysis techniques are proposed to design highly stable zinc anodes.
基金supported by the National Natural Science Foundation of China(Grant No.22461142135,22479046)the Key Programs funded by Science and Technology Department of Shaanxi Provincial Government(Grant:No.2024GX-YBXM-336)+2 种基金the Xi’an Municipal Bureau of Science and Technology(Grant:No.2023JHGXRC-0097)the Yulin Science and Technology Bureau(Grant:No.2024-CXY-161)the Xi’an Beilin District Science and Technology and Industrial Information Bureau(Grant:No.GX2440)。
文摘The development of aqueous zinc-ion batteries is crucial for advancing sustainable energy storage technologies.However,their widespread application is hindered by Zn corrosion and uncontrolled Zn dendrite growth.One promising approach involves creating a functional organic-inorganic interface on the Zn surface.Traditional binders,such as polyvinylidene fluoride(PVDF),fail to regulate water activity and ion migration,limiting the effectiveness of the interface.Herein,we introduce an aqueous dual ionic/electronic conducting binder,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS),to build a water-scarce,Zn^(2+)-enriched interface.Our findings demonstrate that PEDOT:PSS not only facilitates uniform distribution of inorganic fillers,forming a cohesive and compact interface,but also significantly enhances mechanical integrity.Additionally,the sulfonate groups within the binder matrix disrupt the hydrogen bond network of water molecules,reducing water activity and lowering the desolvation energy barrier of Zn(H_(2)O)_(6)^(2+)clusters.Therefore,the transference number of Zn^(2+)is elevated to 0.81(compared to 0.61 with PVDF),mitigating undesirable side reactions and enabling dendrite-less Zn deposition.Consequently,symmetrical Zn||Zn cells with PEDOT:PSS binder demonstrate a lifetime with 4.2 times longer than those with PVDF.This work underscores the critical role of binder chemistry in stabilizing metal anodes for aqueous batteries.
基金supported by Yunnan Natural Science Foundation Project(No.202202AG050003)Yunnan Fundamental Research Projects(Nos.202101BE070001-018 and 202201AT070070)+1 种基金the National Youth Talent Support Program of Yunnan Province China(No.YNQR-QNRC-2020-011)Yunnan Engineering Research Center Innovation Ability Construction and Enhancement Projects(No.2023-XMDJ-00617107)。
文摘Lithium metal has emerged as a highly promising anode material for enhancing the energy density of secondary batteries,attributed to its high theoretical specific capacity and low electrochemical potential.However,safety concerns related to lithium dendrite-induced short circuits and suboptimal electrochemical performance have impeded the commercial viability of lithium metal batteries.Current research efforts primarily focus on altering the solvated structure of Li+by modifying the current collector or introducing electrolyte additives to lower the nucleation barrier,expedite the desolvation process,and suppress the growth of lithium dendrites.Nevertheless,an integrated approach that combines the advantages of these two strategies remains elusive.In this study,we successfully employed metal-organic salt additives with lithophilic properties to accelerate the desolvation process,reduce the nucleation barrier of Li+,and modulate its solvated structure.This approach enhanced the inorganic compound content in the solid electrolyte interphase(SEI)on lithium foil surfaces,leading to stable Li+deposition and stripping.Specifically,Li||Cu cells demonstrated excellent cycle life and Coulombic efficiency(97.28%and 98.59%,respectively)at 0.5 m A/cm^(2)@0.5 m Ah/cm^(2)and 1 m A/cm^(2)@1 m Ah/cm^(2)for 410 and 240 cycles,respectively.Li||Li symmetrical cells showed no short circuit at 1 m A/cm^(2)@1 m Ah/cm^(2)for 1150 h,and Li||LFP full cells retained 68.9%of their capacity(104.6 m Ah/g)after 250 cycles at N/P(1.1:1.0)with a current density of 1C.
基金financially supported by the National Natural Science Foundation of China(NSFC)(22171030 and 21771028)。
文摘Ni-ion aqueous batteries(NIBs)were considered an important development direction for aqueous batteries due to the high theoretical capacity(913 mA h g^(-1))and volume capacity(8136 mA h cm^(-3))of nickel metal.Herein,an electrolyte additive(dodecyl trimethyl ammonium chloride,DTAC)was used to improve the electrolyte environment,achieve efficient transport of Ni-ion,and combine the intercalated vanadium oxide cathodes to realize novel strategy NIBs.Firstly,the introduction of trace amounts of DTAC improved the high-concentration NiCl_(2)(4.2 M)electrolyte environment and reconstructed the hydrogen bond network.Molecular dynamics(MD)calculations and electrochemical results indicated that DTAC contributed to the desolvation process of Ni^(2+)and the realization of fast dynamics.The results of Ni symmetric cells demonstrated that DTAC enhanced the rapid migration of Ni-ion and achieved longer cycling stability(1750/1500 h at 0.2/0.5 mA cm^(-2)without obvious short circuits).Secondly,the insertion of organic small molecules(pyrrolidine)into vanadium oxide(V_(2)O_(5))to expand the interlayer spacing promoted the Ni-ion storage capacity of the cathodes.The capacity retention rate of Ni full battery after 6000 cycles at 5 A g^(-1)reached 82.17%.This work provided a novel strategy for the development of Ni-ion aqueous batteries.
基金financially supported by National Natural Science Foundation of China(Nos.51872090,51772097,52372252)Hebei Natural Science Fund for Distinguished Young Scholar(No.E2019209433)+1 种基金Youth Talent Program of Hebei Provincial Education Department(No.BJ2018020)Natural Science Foundation of Hebei Province(No.E2020209151)。
文摘Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable growth of Zn dendrite and severe side reactions including hydrogen evolution reaction,corrosion,and passivation,etc.Herein,an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups(COF-S-F)is developed on Zn metal(Zn@COF-S-F)as the artificial solid electrolyte interface(SEI).Sulfonic acid group(-SO_(3)H)in COF-S-F can effectively ameliorate the desolvation process of hydrated Zn ions,and the three-dimensional channel with fluoride group(-F)can provide interconnected channels for the favorable transport of Zn ions with ion-confinement effects,endowing Zn@COF-S-F with dendrite-free morphology and suppressed side reactions.Consequently,Zn@COF-S-F symmetric cell can stably cycle for 1,000 h with low average hysteresis voltage(50.5 m V)at the current density of 1.5 m A cm^(-2).Zn@COF-S-F|Mn O_(2)cell delivers the discharge specific capacity of 206.8 m Ah g^(-1)at the current density of 1.2 A g^(-1)after 800 cycles with high-capacity retention(87.9%).Enlightening,building artificial SEI on metallic Zn surface with targeted design has been proved as the effective strategy to foster the practical application of high-performance AZIBs.
基金supported by the grants from the Research Grants Council of the Hong Kong Special Administrative Region,China(Project No.C5031-20)the Guangdong Major Project of Basic and Applied Basic Research(2023B0303000002).
文摘Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety,cost-effectiveness,and high capacity.However,the service life of zinc metal anodes is severely constrained by critical challenges,including dendrites,water-induced hydrogen evolution,and passivation.In this study,a protective two-dimensional metal–organic framework interphase is in situ constructed on the zinc anode surface with a novel gel vapor deposition method.The ultrathin interphase layer(~1μm)is made of layer-stacking 2D nanosheets with angstrom-level pores of around 2.1Å,which serves as an ion sieve to reject large solvent–ion pairs while homogenizes the transport of partially desolvated zinc ions,contributing to a uniform and highly reversible zinc deposition.With the shielding of the interphase layer,an ultra-stable zinc plating/stripping is achieved in symmetric cells with cycling over 1000 h at 0.5 mA cm−2 and~700 h at 1 mA cm^(−2),far exceeding that of the bare zinc anodes(250 and 70 h).Furthermore,as a proof-of-concept demonstration,the full cell paired with MnO_(2) cathode demonstrates improved rate performances and stable cycling(1200 cycles at 1 A g−1).This work provides fresh insights into interphase design to promote the performance of zinc metal anodes.
基金supported by the National Natural Science Foundation of China(Nos.21975087,22008082)。
文摘Lithium metal batteries(LMBs) promise energy density over 400 Wh kg^(-1).However,they suffer severe electrochemical performance deterioration at sub-zero temperatures.Such failure behavior highly correlates to inferior lithium metal anode(LMA) compatibility and sluggish Li^(+) desolvation.Here,we demonstrate that cyclopentylmethyl ether(CPME) based diluted high-concentration electrolyte(DHCE)enables-60℃ LMBs operation.By leveraging the loose coordination between Li^(+) and CPME,such developed electrolyte boosts the formation of ion clusters to derive anion-dominant interfacial chemistry for enhancing LMA compatibility and greatly accelerates Li^(+) desolvation kinetics.The resulting electrolyte demonstrates high Coulombic efficiencies(CE),providing over 99.5%,99.1%,98.5% and 95% at 25,-20,-40,and-60℃respectively.The assembled Li-S battery exhibits remarkable cyclic stability in-20,and-40℃ at 0.2 C charging and 0.5 C discharging.Even at-60℃,Li-S cell with this designed electrolyte retains> 70% of the initial capacity over 170 cycles.Besides,lithium metal coin cell and pouch cell with10 mg cm^(-2) high S cathode loading exhibit cycling stability at-20℃.This work offers an opportunity for rational designing electrolytes toward low temperature LMBs.
文摘Determination of thirty four trace metal elements in electronic high purity hydrochloric acid by ICP-MS (Standard Condition, Plasma Screen Condition) with membrane desolvation was described. Matrix effects were compensated by adding rhodium as the internal standard. Detection limits is 0.1 to 100 ng/L; the recovery of the method is 90%-110%. Long term RSD was less than 5%. The results from ICP and ICP-MS are correspondent. ICP-MS improves the accuracy and efficiency of analyses.
基金the Key Project for Science and Technology Development of Jilin Province, China(No.20010306-1)the China’s Post-doctoral Science Fund(No.20040350561).
文摘This article focuses on iodine determination by microwave plasma torch atomic emission spectrometry （MPT-AES） coupled with online preconcentration vapor generation method. A new desolvation device, multistrand Nafion dryer, was used as the substitute for condenser desolvation system. Some experimental conditions, such as preconcentration time, acidity of sample solution, rinsing solution acidity and dynamic linear range were investigated and optimized. The new desolvation system eliminates the problem of decreasing emission intensity of I（I） 206.238 nm line with the increase of working time on a conventional condenser desolvation system, thus greatly improving the reproducibility.
基金This work was supported by the National Natural Science Foundation of China(U1904216 and U22A20141)the Natural Science Foundation of Changsha City(kq2208258).
文摘The practical application of Li metal anodes(LMAs)is limited by uncontrolled dendrite growth and side reactions.Herein,we propose a new friction-induced strategy to produce high-performance thin Li anode(Li@CFO).By virtue of the in situ friction reaction between fluoropolymer grease and Li strips during rolling,a robust organic/inorganic hybrid interlayer(lithiophilic LiF/LiC_(6)framework hybridized-CF_(2)-O-CF_(2)-chains)was formed atop Li metal.The derived interface contributes to reversible Li plating/stripping behaviors by mitigating side reactions and decreasing the solvation degree at the interface.The Li@CFO||Li@CFO symmetrical cell exhibits a remarkable lifespan for 5,600 h(1.0 mA cm^(-2)and 1.0 mAh cm^(-2))and 1,350 cycles even at a harsh condition(18.0 mA cm^(-2)and 3.0 mAh cm^(-2)).When paired with high-loading LiFePO4 cathodes,the full cell lasts over 450 cycles at 1C with a high-capacity retention of 99.9%.This work provides a new friction-induced strategy for producing high-performance thin LMAs.
基金supported from the National Research Council of Thailand(NRCT):NRCT-RSA63001-19Second Century Fund(C2F),Chulalongkorn University.
文摘The uncontrollable dendrites growth and intricately water-induced side reactions occurred on zinc anode leads to safety issues and poor electrochemical kinetics,which largely limit the widespread application of zinc-ion batteries(ZIBs).Herein,ethylenediaminetetraacetic acid disodium salt(EDTA-2Na)is utilized as an electrolyte additive to strengthen the reversibility and cycling stability of zinc anode.Experimental results and theoretical calculation demonstrate that the EDTA-2Na presents a much stronger coordination with Zn^(2+)when comparing with H_(2)O molecular,implying the EDTA-2Na is capable to enter the solvation shell of[Zn(OH_(2))_(6)]^(2+)and coordinate with Zn^(2+)ions,thus achieving a flat and smooth zinc deposition with less by-products(Zn_(4)SO_(4)(OH)6·xH_(2)O and H_(2)).Consequently,the zinc symmetric battery with EDTA-2Na additive delivers an excellent cycling stability up to 1800 h under current density of 1 mA cm^(-2),and the hydrogen evolution reaction(HER),corrosion,by-product issues are significantly inhibited.Moreover,the rate performance and stability of coin-type and pouch-type Zn||MnO2/graphite batteries are significantly boosted via EDTA-2Na additive(248 mAh g^(-1)at 0.1 A g^(-1),81.3%after 1000 cycles at a A g^(-1)).This kind of electrolyte additive with chelation and desolvation functions shed lights on strategies of improving zinc anode stability for further application of ZIBs.
基金supported by the Guangdong Basic and Applied Basic Research Foundation(No.2019A1515110538)Dongguan Science and Technology of Social Development Program(No.20211800904642)+2 种基金the open research fund of Guangdong Provincial Key Laboratory of Distributed Energy Systems(No.2020DES2)Joint Science Foundation of Wuyi University and HK and Macao(2019WGALH14)Guangdong province innovation and strong school project(2020ZDZX2004)。
文摘Stibium(Sb)metal with high theoretic capacity,suitable negative working window and inexpensive nature are promising anode material for advanced aqueous alkaline batteries(AABs).However,the further development of Sb anode is severely hindered by the low capacity and poor rate capability which is originated from deficient adsorption of[Sb(OH)_(4)]^(-)and its sluggish desolvation kinetics.Herein,a nitrogen doped carbon cages(NCCs)substrate is constructed as high capacity and rate capability anode by promoting the adsorption and following desolvation process of[Sb(OH)_(4)]^(-)via the enhanced attraction toward(OH)-in the solvated[Sb(OH)_(4)]^(-).Consequently,the designed Sb/NCCs anode delivers a high capacity of 627 m Ah g^(-1)with an average 95%Sb utilization,an outstanding coulombic efficiency(CE)of 95%and an impressive lifespan(>110 h).Meanwhile,the Ni_(3)Se_(2)//Sb/NCCs batteries show great capacity retention of 86.7%after 2000 cycles with an areal capacity of 0.52 m Ah cm^(-2).Implementation of the designed anode allows for the construction of Sb-based AABs with enhanced rate capability,energy density and cycling performance.
基金supported by the National Natural Science Foundation of China(No.12274151)。
文摘Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention.To solve the disadvantages of the traditional integrated system,such as highly dependent on energy supply and complex structure,an airrechargeable Zn battery based on MoS_(2)/PANI cathode is reported.Benefited from the excellent conductivity desolvation shield of PANI,the MoS_(2)/PANI cathode exhibits ultra-high capacity(304.98 mAh g^(−1) in N_(2) and 351.25 mAh g^(−1) in air).In particular,this battery has the ability to collect,convert and store energy simultaneously by an airrechargeable process of the spontaneous redox reaction between the discharged cathode and O2 from air.The air-rechargeable Zn batteries display a high open-circuit voltage(1.15 V),an unforgettable discharge capacity(316.09 mAh g^(−1) and the air-rechargeable depth is 89.99%)and good air-recharging stability(291.22 mAh g^(−1) after 50 air recharging/galvanostatic current discharge cycle).Most importantly,both our quasi-solid zinc ion batteries and batteries modules have excellent performance and practicability.This work will provide a promising research direction for the material design and device assembly of the next-generation self-powered system.
文摘The desolvation of erythromycin acetone solvate was investigated under non-isothermal conditions by a thermogravimetric analyzer. This paper emphasized the kinetic analysis of non-isothermal TG-DTA data by Achar method and Coats-Redfern method to fit various solid-state reaction models, and to achieve kinetic parameters of desolvation. The mechanism of thermal desolvation was evaluated using the kinetic compensation effect. The results show that kinetics of desolvation of erythromycin acetone solvate was compatible with the mechanism of a two-dimensional diffusion controlled and was best expressed by Valensi equation. Corresponding to the integral method and the differential method, the activation energy of desolvation of erythromycin acetone solvate was estimated to be 51.26—57.11 kJ/mol, and the pre-exponential factor was 8.077×106 s-1—4.326×107 s-1, respectively.
文摘The glycation of hemoglobin is catalyzed by buffer phosphate and arsenate. The catalytic constant （kB） for aqueous arsenate is two-fold larger than for aqueous phosphate. The catalytic constant （ks） of phosphate in sorbitol mixtures increase from （1.67 ± 0.11） × 10-10 s-1·M-1 to （5.78 ± 0.39） × 10-10 s-1·M-1 and the catalytic constant is enhanced 3.5 times, relative to that in water; the catalytic constant （kB） of arsenate in sorbitol mixtures increase from （2.98±0.07）× 10-10 s-1·M-1 to （6.62 ± 0.53） × 10-10 s-1·M-1 and the catalytic constant is enhanced 2 times, relative to that in water. The spontaneous rate constants are independent of sorbitol concentration for phosphate and arsenate. The catalytic power of phosphate and arsenate in sorbitol are the same. Desolvation of strongly hydrated species such as HPO42 and HAsO42 should make a contribution to the energy cost of the formation of anion-hemoglobin complexes and can be a possible explanation for higher catalytic potential of HAsO42 in water. The same catalytic constant （ksB） for phosphate and arsenate in sorbitol indicates that the same catalyst base group on the hemoglobin molecule may be involved in the abstraction of proton in the Amadori rearrangement.
基金the research fund of the National Natural Science Foundation of China(Nos.21902084,52222203 and 52073008)the Natural Science Foundation of Hubei Province(No.2022CFB354)the 111 Project of Hubei Province(No.2018-19-1)for financial support.
文摘Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy density.However,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion devices.Here,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of Zn.Experimental and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side reactions.Consequently,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 cycles.Ex-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc dendrites.Additionally,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.
