摘要
Sulfides have been widely acknowledged as one of the most promising solid electrolytes(SEs)for all-solid-state batteries(ASSBs)due to their superior ionic conductivity and favourable mechanical properties.However,the extremely poor air stability of sulfide SEs leads to destroyed structure/performance and release of toxic H_(2)S gas,which greatly limits mass-production/practical application of sulfide SEs and ASSBs.This review is designed to serve as an all-inclusive handbook for studying this critical issue.First,the research history and milestone breakthroughs of this field are reviewed,and this is followed by an in-depth elaboration of the theoretical paradigms that have been developed thus far,including the random network theory of glasses,hard and soft acids and bases(HSAB)theory,thermodynamic analysis and kinetics of interfacial reactions.Moreover,the characterization of air stability is reviewed from the perspectives of H2S generation,morphology evolution,mass change,component/structure variations and electrochemical performance.Furthermore,effective strategies for improving the air stabilities of sulfide SEs are highlighted,including H_(2)S absorbents,elemental substitution,design of new materials,surface engineering and sulfide-polymer composite electrolytes.Finally,future research directions are proposed for benign development of air stability for sulfide SEs and ASSBs.
基金
supported by the Key Program-Automobile Joint Fund of the National Natural Science Foundation of China(Grant No.U1964205)
the Key R&D Project funded by the Department of Science and Technology of Jiangsu Province(Grant No.BE2020003)
the General Program of the National Natural Science Foundation of China(Grant No.51972334)
the General Program of the National Natural Science Foundation of Beijing(Grant No.2202058)
the Cultivation Project of Leading Innovative Experts in Changzhou City(CQ20210003)
the National Overseas High-Level Expert Recruitment Program(Grant No.E1JF021E11)
the Talent Program of the Chinese Academy of Sciences,“Scientist Studio Program Funding”from the Yangtze River Delta Physics Research Center and the Tianmu Lake Institute of Advanced Energy Storage Technologies(Grant No.TIES-SS0001).
