Metallic Zn anodes suffer from hydrogen evolution and dendritic deposition in aqueous electrolytes,resulting in low Coulombic efficiency and poor cyclic stability for aqueous Zn-ion batteries(AZIBs).Constructing stabl...Metallic Zn anodes suffer from hydrogen evolution and dendritic deposition in aqueous electrolytes,resulting in low Coulombic efficiency and poor cyclic stability for aqueous Zn-ion batteries(AZIBs).Constructing stable solid electrolyte interphase(SEI)with strong affinity for Zn and exclusion of water corrosion of Zn metal anodes is a promising strategy to tackle these challenges.In this study,we develop a self-healing ZnO-based SEI film on the Zn electrode surface by employing an aspartame(APM)as a versatile electrolyte additive.The hydrophobic nature and strong Zn affinity of APM can facilitate the dynamic self-healing of ZnO-based SEI film during cyclic Zn plating/stripping process.Benefiting from the superior protection effect of self-healing ZnO-based SEI,the Zn║Cu cells possess an average coulombic efficiency more than 99.59%over 1,000 cycles even at a low current density of 1 m A cm^(-2)-1 m Ah cm^(-2).Furthermore,the Zn║NH_4~+-V_(2)O_5 full cells display a large specific capacity of 150 mAh g^(-1)and high cyclic stability with a capacity retention of 77.8%after 1,750 cycles.In addition,the Zn║Zn cell delivers high temperature adaptability at a wide-temperature range from-5 to 40℃ even under a high DOD of 85.2%.The enhanced capability and durability originate from the self-healing SEI formation enabled by multifunctional APM additives mediating both corrosion suppression and interfacial stabilization.This work presents an inspired and straightforward approach to promote a dendrite-free and widetemperature rechargeable AZIBs energy storage system.展开更多
Efficient,safe,and reliable energy output from high-energy-density lithium metal batteries(LMBs)at all climates is crucial for portable electronic devices operating in complex environments.The performance of correspon...Efficient,safe,and reliable energy output from high-energy-density lithium metal batteries(LMBs)at all climates is crucial for portable electronic devices operating in complex environments.The performance of corresponding cathodes and lithium(Li)metal anodes,however,faces significant challenges under such demanding conditions.Herein,a nonflammable electrolyte for high-voltage Li‖LCO cells has been designed,including partially-fluorinated ethyl 4,4,4-trifluorobutyrate(ETFB)as the key solvent,guided by theoretical calculations.With this ETFB-based electrolyte,Li‖LCO cells exhibit enhanced reversible capacities and superior capacity retention at an elevated charge voltage of 4.5 V and a wide operating temperature range spanning from-60℃to 70℃.The cells achieve 67.1%discharge capacity at-60℃,relative to room temperature capacity,and 85.9%100th-cycle retention at 70℃.The outstanding properties are attributed to the LiF-rich interphases formed in the ETFB-based electrolyte with a finetuned solvation structure,in which the coordination environment in the vicinity of Li^(+)cations and the distance between anion and solvents are subtly adjusted by introducing ETFB.This solvation structure has been mutually elucidated through joint spectra characterizations and atomistic simulations.This work presents a new strategy for the design of electrolytes to achieve all-climate reliable and safe application of LMBs.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
Ethylene carbonate(EC)is susceptible to the aggressive chemistry of nickel-rich cathodes,making it undesirable for high-voltage lithium-ion batteries(LIBs).The arbitrary elimination of EC leads to better oxidative tol...Ethylene carbonate(EC)is susceptible to the aggressive chemistry of nickel-rich cathodes,making it undesirable for high-voltage lithium-ion batteries(LIBs).The arbitrary elimination of EC leads to better oxidative tolerance but always incurs interfacial degradation and electrolyte decomposition.Herein,an EC-free electrolyte is deliberately developed based on gradient solvation by pairing solvation-protection agent(1,3,5-trifluorobenzene,F_(3)B)with propylene carbonate(PC)/methyl ethyl carbonate(EMC)formulation.F_(3)B keeps out of inner coordination shell but decomposes preferentially to construct robust interphase,inhibiting solvent decomposition and electrode corrosion.Thereby,the optimized electrolyte(1.1 M)with wide liquid range(-70–77℃)conveys decent interfacial compatibility and high-voltage stability(4.6 V for LiNi_(0.6)Mn_(0.2)Co_(0.2)O_(2),NCM622),qualifying reliable operation of practical NCM/graphite pouch cell(81.1%capacity retention over 600 cycles at 0.5 C).The solvation preservation and interface protection from F_(3)B blaze a new avenue for developing high-voltage electrolytes in next-generation LIBs.展开更多
An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs).The active electrode is one of the most important parts of SC,which is directly re...An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs).The active electrode is one of the most important parts of SC,which is directly related to the energy density,power transmission and long-term cyclability of the device in the wide-temperature environment.Compared with the SC electrodes aimed for room-temperature application,the SC electrodes for operating at wide-temperature scene often face greater challenges.In this review,the main challenges of SC electrodes under various temperature conditions,including low,high and cross-fade temperatures,are summarized.The relevant performance decay and failure mechanisms of wide-temperature SC electrodes are analyzed.In addition,this review deals with the recent studies and developments in robust wide-temperature SC electrodes with respect to the rational design of electrode structures and the exploitation of advanced active materials.Finally,the future directions for exploring reliable wide-temperature SCs are also proposed.展开更多
Along with the keeping growing demand for high-energy-density energy storage system,high-voltage Li-metal batteries(LMBs)have attracted many attentions.In view of many defects of the commercial electrolytes,such as fl...Along with the keeping growing demand for high-energy-density energy storage system,high-voltage Li-metal batteries(LMBs)have attracted many attentions.In view of many defects of the commercial electrolytes,such as flammability,limited operation temperature range,and severe Li dendrite growth,non-flammable phosphate-based localized highly concentrated electrolytes(LHCE)have been explored as one of the safe electrolytes for LMBs.But until now there is rare report on wide-temperature range LMBs using phosphate-based electrolytes.Here,we prepare a wide-temperature LHCE,which is composed of lithium difluoro(oxalato)borate(LiDFOB),triethyl phosphate(TEP),and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(HFE),and explore the applicability in wide-temperature LMBs from−40 to 70℃.In the LHCE,both TEP and HFE are non-flammable,and Li^(+) is highly coordinated with TEP and DFOB^(−),which can effectively inhibit the TEP decomposition on anode,and facilitate the preferential reduction of DFOB^(−),thus obtain a robust solid electrolyte interphase(SEI)to suppress Li dendrite growth and side reactions.Therefore,this LHCE can not only endow Li/Cu and Li/Li cells with high Coulombic efficiency(CE)and long cycling lifespan,but also be applied to LiFePO_(4)(LFP)/Li and LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)/Li LMBs.Most importantly,the NCM523/Li LMBs with LHCE can deliver stable cycling performance at 4.5 V high-voltage and high-temperature(70℃),as well as excellent low-temperature capacity retention even though both charging and discharging process were carried out at−40℃.展开更多
Lithium ion batteries(LIBs)that can be operated under extended temperature range hold significant application potentials.Here in this work,we successfully synthesized Co2V2O7 electrode with rich porosity from a facile...Lithium ion batteries(LIBs)that can be operated under extended temperature range hold significant application potentials.Here in this work,we successfully synthesized Co2V2O7 electrode with rich porosity from a facile hydrothermal and combustion process.When applied as anode for LIBs,the electrode displayed excellent stability and rate performance in a wide range of temperatures.Remarkably,a stable capacity of 206 mAhg 1 was retained after cycling at a high current density of 10 A·g-1 for 6,000 cycles at room temperature(25℃).And even when tested under extreme conditions,i.e.,-20 and 60℃,the battery still maintained its remarkable stability and rate capability.For example,at-20℃,a capacity of 633 mAh·g 1 was retained after 50 cycles at 0.1 A·g 1;and even after cycling at 60℃ at 10 A·g-1 for 1,000 cycles,a reversible capacity of 885 mAh·g-1 can be achieved.We believe the development of such electrode material will fciliate progress of the next-generation LIBs with wide operating windows.展开更多
Elevating the upper cutoff voltage to 4.6 V could effec-tively increase the reversible capacity ofLiCoO_(2)(LCO)cathode,whereas the irreversible structural transition,unstable electrode/electrolyte interface and poten...Elevating the upper cutoff voltage to 4.6 V could effec-tively increase the reversible capacity ofLiCoO_(2)(LCO)cathode,whereas the irreversible structural transition,unstable electrode/electrolyte interface and potentially induced safety hazards severely hinder its industrial application.Building a robust cathode/electrolyte interface film by electrolyte engineer-ing is one of the efficient approaches to boost the performance of high-voltage LCO(HV-LCO);however,the elusive interfacial chemistry poses substantial challenges to the rational design of highly compatible electrolytes.Herein,we propose a novel electrolyte design strategy and screen proper solvents based on two factors:highest occupied molecular orbital energy level and LCO absorption energy.Tris(2,2,2-trifluoroethyl)phosphate is determined as the optimal solvent,whose low defluorination energy barrier significantly promotes the construction of LiF-rich cathode/electrolyte interface layer on the surface of LCO,thereby eventually suppresses the phase transition and enhancesLi+diffusion kinetics.The rationally designed electrolyte endows graphite||HV-LCO pouch cells with long cycle life(85.3%capacity retention after 700 cycles),wide-temperature adaptability(-60–80℃)and high safety(pass nail penetration).This work provides new insights into the electrolyte screening and rational design to constructing stable interface for high-energy lithium-ion batteries.展开更多
Wide-temperature applications of sodium-ion batteries(SIBs)are severely limited by the sluggish ion insertion/diffusion kinetics of conversion-type anodes.Quantum-sized transition metal dichalcogenides possess unique ...Wide-temperature applications of sodium-ion batteries(SIBs)are severely limited by the sluggish ion insertion/diffusion kinetics of conversion-type anodes.Quantum-sized transition metal dichalcogenides possess unique advantages of charge delocalization and enrich uncoordinated electrons and short-range transfer kinetics,which are crucial to achieve rapid low-temperature charge transfer and high-temperature interface stability.Herein,a quantum-scale FeS_(2) loaded on three-dimensional Ti_(3)C_(2) MXene skeletons(FeS_(2) QD/MXene)fabricated as SIBs anode,demonstrating impressive performance under wide-temperature conditions(−35 to 65).The theoretical calculations combined with experimental characterization interprets that the unsaturated coordination edges of FeS_(2) QD can induce delocalized electronic regions,which reduces electrostatic potential and significantly facilitates efficient Na+diffusion across a broad temperature range.Moreover,the Ti_(3)C_(2) skeleton reinforces structural integrity via Fe-O-Ti bonding,while enabling excellent dispersion of FeS_(2) QD.As expected,FeS_(2) QD/MXene anode harvests capacities of 255.2 and 424.9 mAh g^(−1) at 0.1 A g^(−1) under−35 and 65,and the energy density of FeS_(2) QD/MXene//NVP full cell can reach to 162.4 Wh kg^(−1) at−35,highlighting its practical potential for wide-temperatures conditions.This work extends the uncoordinated regions induced by quantum-size effects for exceptional Na^(+)ion storage and diffusion performance at wide-temperatures environment.展开更多
Covalent organic frameworks(COFs)are promising materials for mitigating polysulfide shuttling in lithium-sulfur(Li-S)batteries,but enhancing their ability to convert polysulfides across a wide temperature range remain...Covalent organic frameworks(COFs)are promising materials for mitigating polysulfide shuttling in lithium-sulfur(Li-S)batteries,but enhancing their ability to convert polysulfides across a wide temperature range remains a challenge,Herein,we introduce a redox-active COF(RaCOF)that functions as both a physical barrier and a kinetic enhancer to improve the temperature adaptability of Li-S batteries,The RaCOF constructed from redox-active anthraquinone units accelerates polysulfide conversion kinetics through reversible C=O/C-OLi transformations within a voltage range of 1,7 to 2.8 V(vs.Li^(+)/Li),optimizing sulfur redox reactions in ether-based electrolytes.Unlike conventional COFs,RaCOF provides bidentate trapping of polysulfides,increasing binding energy and facilitating more effective polysulfide management.In-situ XRD and ToF-SIMS analyses confirm that RaCOF enhances polysulfide adsorption and promotes the transformation of lithium sulfide(Li_(2)S),leading to better sulfur cathode reutilization.Consequently,RaCOF-modified Li-S batteries demonstrate low self-discharge(4.0%decay over a 7-day rest),excellent wide-temperature performance(stable from-10 to+60℃),and high-rate cycling stability(94%capacity retention over 500 cycles at 5.0 C).This work offers valuable insights for designing COF structures aimed at achieving temperature-adaptive performance in rechargeable batteries.展开更多
The sluggish ion transport and deteriorating electrode-electrolyte interphase hinder the performance of lithium-ion batteries under wide temperature operation,thereby posing substantial challenges in improving both hi...The sluggish ion transport and deteriorating electrode-electrolyte interphase hinder the performance of lithium-ion batteries under wide temperature operation,thereby posing substantial challenges in improving both high-voltage and high-rate performance.Herein,the competitive ion-molecule-coordinated interactions(Li+-anion-solvent-diluent)achieve a balance that directs an anion-dominated and moderate diluent-interacting solvation structure,resulting in an excellent wide-temperature electrolyte with electrochemical stability up to 5.4 V and high Li-ion conductivity(1.034 mS/cm at-60℃).The corresponding NCM811||Li cells exhibit capacity retention ratios of 90.74%after 200 cycles at-40℃ and 54.68%for 250 cycles at 70℃.Additionally,the cell achieves stable cycling performance at a high rate of 10 C at 25℃.Notably,the assembled NCM811||Graphite pouch battery(3 Ah)can be operated at-106℃ and possesses 2.6 Ah at-30℃,with 90.28%capacity retention after 90 cycles and stable cycling performance at 50℃.This work provides a new design principle for electrolyte,which may expedite the development of ultra-wide-temperature lithium-ion batteries.展开更多
Alloying-type anode materials are considered promising candidates for next-generation alkali-ion batteries.However,they face significant challenges owing to severe volume variations and sluggish kinetics,which hinder t...Alloying-type anode materials are considered promising candidates for next-generation alkali-ion batteries.However,they face significant challenges owing to severe volume variations and sluggish kinetics,which hinder their practical applications.To address these issues,we propose a universal synthetic strategy,which can realize the facile synthesis of various alloying-type anode materials composed of a porous carbon matrix with uniformly embedded nanoparticles(Sb,Bi,or Sn).Besides,we construct the interactions among active materials,electrolyte compositions,and the resulting interface chemistries.This understanding assists in establishing balanced kinetics and stability.As a result,the fabricated battery cells based on the above strategy demonstrate high reversible capacity(515.6 mAh g1),long cycle life(200 cycles),and excellent high-rate capability(at 5.0 C).Additionally,it shows improved thermal stability at 45 and 60C.Moreover,our alloying-type anodes exhibit significant potential for constructing a 450 Wh kg1 battery system.This proposed strategy could boost the development of alloying-type anode materials,aligning with the future demands for low-cost,high stability,high safety,wide-temperature,and fast-charging battery systems.展开更多
Low-cost sodium-ion batteries(SIBs)are promising candidates for grid-scale energy-storage systems,and the wide-temperature operations of SIBs are highly demanded to accommodate extreme weather.Herein,a low-cost SIB is...Low-cost sodium-ion batteries(SIBs)are promising candidates for grid-scale energy-storage systems,and the wide-temperature operations of SIBs are highly demanded to accommodate extreme weather.Herein,a low-cost SIB is fabricated with a Na_(4)Fe_(3)(PO_(4))_(2)P_(2)O_(7)(NFPP)cathode,a natural graphite(NG)anode,and an ether-based electrolyte.The prepared NG/NFPP batteries deliver a long lifespan of 1000 cycles,high-power density of 5938 W/kg,and remarkable rate performance of 10 A/g with a high capacity retention of 60%.Benefiting from the solvent co-intercalation process of the NG anode and the high Na^(+) diffusion rate of the NFPP cathode,the NG//NFPP battery displays outstanding performance at-40℃ and even can work at an ultralow temperature of-70℃.Furthermore,the high boiling point of the electrolytes and high thermal stability of the electrode materials also enable the high-temperature operation of the full battery up to 130℃.This work will guide the design of the wide-temperature SIBs.展开更多
基金mainly supported by the National Natural Science Foundation of China[No.52374312]the Science and Technology Innovation Program of Hunan Province[No.2024RC3026]+2 种基金the Natural Science Foundation of Hunan Province[No.2023JJ10076]the Research Institute for Advanced Manufacturing via the project No.1-CD9C,1-CDLR,Research Project of Zhuzhou Smelting Group Co.,Ltd.[ZYGFGH2307071500015]the High Performance Computing Center of Central South University。
文摘Metallic Zn anodes suffer from hydrogen evolution and dendritic deposition in aqueous electrolytes,resulting in low Coulombic efficiency and poor cyclic stability for aqueous Zn-ion batteries(AZIBs).Constructing stable solid electrolyte interphase(SEI)with strong affinity for Zn and exclusion of water corrosion of Zn metal anodes is a promising strategy to tackle these challenges.In this study,we develop a self-healing ZnO-based SEI film on the Zn electrode surface by employing an aspartame(APM)as a versatile electrolyte additive.The hydrophobic nature and strong Zn affinity of APM can facilitate the dynamic self-healing of ZnO-based SEI film during cyclic Zn plating/stripping process.Benefiting from the superior protection effect of self-healing ZnO-based SEI,the Zn║Cu cells possess an average coulombic efficiency more than 99.59%over 1,000 cycles even at a low current density of 1 m A cm^(-2)-1 m Ah cm^(-2).Furthermore,the Zn║NH_4~+-V_(2)O_5 full cells display a large specific capacity of 150 mAh g^(-1)and high cyclic stability with a capacity retention of 77.8%after 1,750 cycles.In addition,the Zn║Zn cell delivers high temperature adaptability at a wide-temperature range from-5 to 40℃ even under a high DOD of 85.2%.The enhanced capability and durability originate from the self-healing SEI formation enabled by multifunctional APM additives mediating both corrosion suppression and interfacial stabilization.This work presents an inspired and straightforward approach to promote a dendrite-free and widetemperature rechargeable AZIBs energy storage system.
基金the financial support from Projects of Science&Technology Department of Sichuan Province(Grant No.22023YFG0082,Grant No.2023YFG0096,and Grant No.2023ZHJY0019)Chengdu Science and Technology Projects(Grant No.2024-YF08-00062-GX).
文摘Efficient,safe,and reliable energy output from high-energy-density lithium metal batteries(LMBs)at all climates is crucial for portable electronic devices operating in complex environments.The performance of corresponding cathodes and lithium(Li)metal anodes,however,faces significant challenges under such demanding conditions.Herein,a nonflammable electrolyte for high-voltage Li‖LCO cells has been designed,including partially-fluorinated ethyl 4,4,4-trifluorobutyrate(ETFB)as the key solvent,guided by theoretical calculations.With this ETFB-based electrolyte,Li‖LCO cells exhibit enhanced reversible capacities and superior capacity retention at an elevated charge voltage of 4.5 V and a wide operating temperature range spanning from-60℃to 70℃.The cells achieve 67.1%discharge capacity at-60℃,relative to room temperature capacity,and 85.9%100th-cycle retention at 70℃.The outstanding properties are attributed to the LiF-rich interphases formed in the ETFB-based electrolyte with a finetuned solvation structure,in which the coordination environment in the vicinity of Li^(+)cations and the distance between anion and solvents are subtly adjusted by introducing ETFB.This solvation structure has been mutually elucidated through joint spectra characterizations and atomistic simulations.This work presents a new strategy for the design of electrolytes to achieve all-climate reliable and safe application of LMBs.
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supported by the National Key Research and Development Program of China(No.2022YFB2404800)。
文摘Ethylene carbonate(EC)is susceptible to the aggressive chemistry of nickel-rich cathodes,making it undesirable for high-voltage lithium-ion batteries(LIBs).The arbitrary elimination of EC leads to better oxidative tolerance but always incurs interfacial degradation and electrolyte decomposition.Herein,an EC-free electrolyte is deliberately developed based on gradient solvation by pairing solvation-protection agent(1,3,5-trifluorobenzene,F_(3)B)with propylene carbonate(PC)/methyl ethyl carbonate(EMC)formulation.F_(3)B keeps out of inner coordination shell but decomposes preferentially to construct robust interphase,inhibiting solvent decomposition and electrode corrosion.Thereby,the optimized electrolyte(1.1 M)with wide liquid range(-70–77℃)conveys decent interfacial compatibility and high-voltage stability(4.6 V for LiNi_(0.6)Mn_(0.2)Co_(0.2)O_(2),NCM622),qualifying reliable operation of practical NCM/graphite pouch cell(81.1%capacity retention over 600 cycles at 0.5 C).The solvation preservation and interface protection from F_(3)B blaze a new avenue for developing high-voltage electrolytes in next-generation LIBs.
基金supported by the National Natural Science Foundation of China(52202246)the Science and Technology Support Program of Jiangsu Province(BE2020759)+1 种基金the Natural Science Research of Jiangsu Higher Education Institutions of China(22KJB430024)the Natural Science Foundation of Jiangsu Normal University(21XSRX008)。
文摘An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs).The active electrode is one of the most important parts of SC,which is directly related to the energy density,power transmission and long-term cyclability of the device in the wide-temperature environment.Compared with the SC electrodes aimed for room-temperature application,the SC electrodes for operating at wide-temperature scene often face greater challenges.In this review,the main challenges of SC electrodes under various temperature conditions,including low,high and cross-fade temperatures,are summarized.The relevant performance decay and failure mechanisms of wide-temperature SC electrodes are analyzed.In addition,this review deals with the recent studies and developments in robust wide-temperature SC electrodes with respect to the rational design of electrode structures and the exploitation of advanced active materials.Finally,the future directions for exploring reliable wide-temperature SCs are also proposed.
基金supported by the National Natural Science Foundation of China(Nos.22179142 and 22075314)The XPS characterization is supported by Nano-X(Vacuum Interconnected Nanotech Workstation,Chinese Academy of Sciences,Suzhou 215123,China).
文摘Along with the keeping growing demand for high-energy-density energy storage system,high-voltage Li-metal batteries(LMBs)have attracted many attentions.In view of many defects of the commercial electrolytes,such as flammability,limited operation temperature range,and severe Li dendrite growth,non-flammable phosphate-based localized highly concentrated electrolytes(LHCE)have been explored as one of the safe electrolytes for LMBs.But until now there is rare report on wide-temperature range LMBs using phosphate-based electrolytes.Here,we prepare a wide-temperature LHCE,which is composed of lithium difluoro(oxalato)borate(LiDFOB),triethyl phosphate(TEP),and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether(HFE),and explore the applicability in wide-temperature LMBs from−40 to 70℃.In the LHCE,both TEP and HFE are non-flammable,and Li^(+) is highly coordinated with TEP and DFOB^(−),which can effectively inhibit the TEP decomposition on anode,and facilitate the preferential reduction of DFOB^(−),thus obtain a robust solid electrolyte interphase(SEI)to suppress Li dendrite growth and side reactions.Therefore,this LHCE can not only endow Li/Cu and Li/Li cells with high Coulombic efficiency(CE)and long cycling lifespan,but also be applied to LiFePO_(4)(LFP)/Li and LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)/Li LMBs.Most importantly,the NCM523/Li LMBs with LHCE can deliver stable cycling performance at 4.5 V high-voltage and high-temperature(70℃),as well as excellent low-temperature capacity retention even though both charging and discharging process were carried out at−40℃.
基金the National Natural Science Foundation of China(Nos.21606003,51802044,51972067,51672193,51420105002,and 51920105004)State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization.The authors also acknowledge Singapore MOE AcRF Tier 2 under Grant Nos.2018-T2-1-010 and MOE2017-T2-2-069National Research Foundation of Singapore(NRF)Investigatorship,award Number NRF2016NRFNRFI001-22.
文摘Lithium ion batteries(LIBs)that can be operated under extended temperature range hold significant application potentials.Here in this work,we successfully synthesized Co2V2O7 electrode with rich porosity from a facile hydrothermal and combustion process.When applied as anode for LIBs,the electrode displayed excellent stability and rate performance in a wide range of temperatures.Remarkably,a stable capacity of 206 mAhg 1 was retained after cycling at a high current density of 10 A·g-1 for 6,000 cycles at room temperature(25℃).And even when tested under extreme conditions,i.e.,-20 and 60℃,the battery still maintained its remarkable stability and rate capability.For example,at-20℃,a capacity of 633 mAh·g 1 was retained after 50 cycles at 0.1 A·g 1;and even after cycling at 60℃ at 10 A·g-1 for 1,000 cycles,a reversible capacity of 885 mAh·g-1 can be achieved.We believe the development of such electrode material will fciliate progress of the next-generation LIBs with wide operating windows.
基金financially supported by National Key Research and Development Program of China(2024YFE0213000)National Natural Science Foundation of China(No.U22A20438)+1 种基金Hubei Natural Science Foundation(2023BAB036,2024BAB103)the Key Research and Development Program of Ningxia Hui Autonomous Region(2024BEE02002).
文摘Elevating the upper cutoff voltage to 4.6 V could effec-tively increase the reversible capacity ofLiCoO_(2)(LCO)cathode,whereas the irreversible structural transition,unstable electrode/electrolyte interface and potentially induced safety hazards severely hinder its industrial application.Building a robust cathode/electrolyte interface film by electrolyte engineer-ing is one of the efficient approaches to boost the performance of high-voltage LCO(HV-LCO);however,the elusive interfacial chemistry poses substantial challenges to the rational design of highly compatible electrolytes.Herein,we propose a novel electrolyte design strategy and screen proper solvents based on two factors:highest occupied molecular orbital energy level and LCO absorption energy.Tris(2,2,2-trifluoroethyl)phosphate is determined as the optimal solvent,whose low defluorination energy barrier significantly promotes the construction of LiF-rich cathode/electrolyte interface layer on the surface of LCO,thereby eventually suppresses the phase transition and enhancesLi+diffusion kinetics.The rationally designed electrolyte endows graphite||HV-LCO pouch cells with long cycle life(85.3%capacity retention after 700 cycles),wide-temperature adaptability(-60–80℃)and high safety(pass nail penetration).This work provides new insights into the electrolyte screening and rational design to constructing stable interface for high-energy lithium-ion batteries.
基金supported by the National Nature Science Foundation of China(Nos.52202335 and 52171227)Natural Science Foundation of Jiangsu Province(No.BK20221137)National Key R&D Program of China(2024YFE0108500).
文摘Wide-temperature applications of sodium-ion batteries(SIBs)are severely limited by the sluggish ion insertion/diffusion kinetics of conversion-type anodes.Quantum-sized transition metal dichalcogenides possess unique advantages of charge delocalization and enrich uncoordinated electrons and short-range transfer kinetics,which are crucial to achieve rapid low-temperature charge transfer and high-temperature interface stability.Herein,a quantum-scale FeS_(2) loaded on three-dimensional Ti_(3)C_(2) MXene skeletons(FeS_(2) QD/MXene)fabricated as SIBs anode,demonstrating impressive performance under wide-temperature conditions(−35 to 65).The theoretical calculations combined with experimental characterization interprets that the unsaturated coordination edges of FeS_(2) QD can induce delocalized electronic regions,which reduces electrostatic potential and significantly facilitates efficient Na+diffusion across a broad temperature range.Moreover,the Ti_(3)C_(2) skeleton reinforces structural integrity via Fe-O-Ti bonding,while enabling excellent dispersion of FeS_(2) QD.As expected,FeS_(2) QD/MXene anode harvests capacities of 255.2 and 424.9 mAh g^(−1) at 0.1 A g^(−1) under−35 and 65,and the energy density of FeS_(2) QD/MXene//NVP full cell can reach to 162.4 Wh kg^(−1) at−35,highlighting its practical potential for wide-temperatures conditions.This work extends the uncoordinated regions induced by quantum-size effects for exceptional Na^(+)ion storage and diffusion performance at wide-temperatures environment.
基金funding supporting from the National Natural Science Foundation of China(22309003,22379001)the Natural Science Research Project of Anhui Province Education Department(2023AH051119)+3 种基金the open project funding from Shanghai Key Laboratory of Multi phase Materials Chemical Engineering(MMCE2024001)the National Key Research and Development Program of China(2022YFB2402201)the Shanghai Pilot Program for Basic Research-Fudan University 21TQ1400100(21TQ009)the Fundamental Research Funds for the Central Universities(20720220010).
文摘Covalent organic frameworks(COFs)are promising materials for mitigating polysulfide shuttling in lithium-sulfur(Li-S)batteries,but enhancing their ability to convert polysulfides across a wide temperature range remains a challenge,Herein,we introduce a redox-active COF(RaCOF)that functions as both a physical barrier and a kinetic enhancer to improve the temperature adaptability of Li-S batteries,The RaCOF constructed from redox-active anthraquinone units accelerates polysulfide conversion kinetics through reversible C=O/C-OLi transformations within a voltage range of 1,7 to 2.8 V(vs.Li^(+)/Li),optimizing sulfur redox reactions in ether-based electrolytes.Unlike conventional COFs,RaCOF provides bidentate trapping of polysulfides,increasing binding energy and facilitating more effective polysulfide management.In-situ XRD and ToF-SIMS analyses confirm that RaCOF enhances polysulfide adsorption and promotes the transformation of lithium sulfide(Li_(2)S),leading to better sulfur cathode reutilization.Consequently,RaCOF-modified Li-S batteries demonstrate low self-discharge(4.0%decay over a 7-day rest),excellent wide-temperature performance(stable from-10 to+60℃),and high-rate cycling stability(94%capacity retention over 500 cycles at 5.0 C).This work offers valuable insights for designing COF structures aimed at achieving temperature-adaptive performance in rechargeable batteries.
基金supported by the National Natural Science Foundation of China(52377220)the Natural Science Foundation of Changsha,Hunan Province,China(kq2208265)the State Key Laboratory of Powder Metallurgy at Central South University,and the High Performance Computing Center of Central South University。
文摘The sluggish ion transport and deteriorating electrode-electrolyte interphase hinder the performance of lithium-ion batteries under wide temperature operation,thereby posing substantial challenges in improving both high-voltage and high-rate performance.Herein,the competitive ion-molecule-coordinated interactions(Li+-anion-solvent-diluent)achieve a balance that directs an anion-dominated and moderate diluent-interacting solvation structure,resulting in an excellent wide-temperature electrolyte with electrochemical stability up to 5.4 V and high Li-ion conductivity(1.034 mS/cm at-60℃).The corresponding NCM811||Li cells exhibit capacity retention ratios of 90.74%after 200 cycles at-40℃ and 54.68%for 250 cycles at 70℃.Additionally,the cell achieves stable cycling performance at a high rate of 10 C at 25℃.Notably,the assembled NCM811||Graphite pouch battery(3 Ah)can be operated at-106℃ and possesses 2.6 Ah at-30℃,with 90.28%capacity retention after 90 cycles and stable cycling performance at 50℃.This work provides a new design principle for electrolyte,which may expedite the development of ultra-wide-temperature lithium-ion batteries.
基金supported by the National Natural Science Foundation of China(52002094)Guangdong Basic and Applied Basic Research Foundation(2019A1515110756)+1 种基金Shenzhen Science and Technology Program(JCYJ20210324121411031,JSGG202108021253804014,RCBS 20210706092218040,GXWD20221030205923001,and GXWD20201230155427003-20200824103000001)State Key Laboratory of Precision Welding&Joining of Materials and Structures(Nos.24-Z-17,24-T-08).
文摘Alloying-type anode materials are considered promising candidates for next-generation alkali-ion batteries.However,they face significant challenges owing to severe volume variations and sluggish kinetics,which hinder their practical applications.To address these issues,we propose a universal synthetic strategy,which can realize the facile synthesis of various alloying-type anode materials composed of a porous carbon matrix with uniformly embedded nanoparticles(Sb,Bi,or Sn).Besides,we construct the interactions among active materials,electrolyte compositions,and the resulting interface chemistries.This understanding assists in establishing balanced kinetics and stability.As a result,the fabricated battery cells based on the above strategy demonstrate high reversible capacity(515.6 mAh g1),long cycle life(200 cycles),and excellent high-rate capability(at 5.0 C).Additionally,it shows improved thermal stability at 45 and 60C.Moreover,our alloying-type anodes exhibit significant potential for constructing a 450 Wh kg1 battery system.This proposed strategy could boost the development of alloying-type anode materials,aligning with the future demands for low-cost,high stability,high safety,wide-temperature,and fast-charging battery systems.
基金support from the National Natural Science Foundation of China(Nos.222252-01,21975052)the Shanghai Pilot Program for Basic Research-Fudan University 21TQ1400100(No.21TQ009)the Fundamental Research Funds for the Central Universities(No.20720220010).
文摘Low-cost sodium-ion batteries(SIBs)are promising candidates for grid-scale energy-storage systems,and the wide-temperature operations of SIBs are highly demanded to accommodate extreme weather.Herein,a low-cost SIB is fabricated with a Na_(4)Fe_(3)(PO_(4))_(2)P_(2)O_(7)(NFPP)cathode,a natural graphite(NG)anode,and an ether-based electrolyte.The prepared NG/NFPP batteries deliver a long lifespan of 1000 cycles,high-power density of 5938 W/kg,and remarkable rate performance of 10 A/g with a high capacity retention of 60%.Benefiting from the solvent co-intercalation process of the NG anode and the high Na^(+) diffusion rate of the NFPP cathode,the NG//NFPP battery displays outstanding performance at-40℃ and even can work at an ultralow temperature of-70℃.Furthermore,the high boiling point of the electrolytes and high thermal stability of the electrode materials also enable the high-temperature operation of the full battery up to 130℃.This work will guide the design of the wide-temperature SIBs.
