Development trend of sulfide solid electrolytes for solid-state lithium batteries in the context of"dual carbon goals"
China's carbon peaking and carbon neutrality strategy has made electric vehicles and energy storage crucial tools for its implementation.Lithium-ion batteries have emerged as a core technology for electric vehicles and energy storage,exhibiting significant progress in recent years.Current lithium-ion batteries(LIBs)predominantly use liquid electrolytes,which encounter safety and energy density bottlenecks,posing challenges to meet the application demand for electric vehicles and energy storage.Sulfide all-solid-state lithium batteries(ASSLBs)incorporate an inorganic sulfide solid-state electrolyte in place of the commonly used liquid electrolyte,presenting a solution to the flammable and explosive safety concerns associated with the latter.Meanwhile,based on the high ionic conductivity of the sulfide electrolyte,the sulfide electrolyte based ASSLB has exhibited excellent rate performance.In this review,the history of their development was introduced before the classification and structure of sulfide electrolytes.Then,it was followed by a discussion of the structural features,ion transport mechanisms and electrochemical properties of both glassy and crystalline sulfide electrolytes.Three different synthesis methods and the corresponding electrochemical properties of the resulting sulfide electrolytes were then presented.Finally,key properties such as air stability and interfacial stability that determined their industrial applications were summarized.It was suggested in conclusion to offer recommendations for the future research path of sulfide electrolyte,which could boost the industrial usage of ASSLBs and contribute to the fulfilment of China's"dual carbon goals".
国家科技期刊平台
NSTL
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