锂离子电池固体电解质的研究与进展  

Research and development of solid electrolytes for lithium ion batteries

作　　者：穆道斌[1] 谢慧琳 吴伯荣[1,2] MU Daobin;XIE Huilin;WU Borong(Department of Energy&Environmental Materials,Beijing Institute of Technology,Beijing 10081,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 10081,China)

机构地区：[1]北京理工大学能源与环境材料系,北京100081 [2]北京市电动汽车协同创新中心,北京100081

出　　处：《汽车安全与节能学报》2020年第4期415-427,共13页Journal of Automotive Safety and Energy

基　　金：国家重点研发计划(2017YFB0102000);国家自然基金项目(52072036);“十三五”装备预研项目(41421040202);上海航天科技创新基金项目(SAST2018-114)。

摘　　要：固态锂离子电池因具备能量密度高、安全性能好等优点,已经成为了未来动力电池的主流发展方向。该文详细梳理了固态锂离子电池的组成和特性以及其核心组成部分─固体电解质的类型与研究进展;简述了当前固态锂离子电池的研发现状,重点阐述了石榴石型锂镧锆氧(Li7La3Zr2O12)基固体电解质在改善锂离子电导率以及界面调控的研究。该类型固体电解质凭借良好的室温离子电导率、优异的金属锂复合相容性,以及在应用环境下可靠稳定的突出特性,有望成为未来全固态锂离子动力电池的重要组成单元。指出固体电解质材料的研发势将会对未来固态锂离子动力电池乃至电动汽车领域的发展提供巨大的推力,前景广阔。Solid-state lithium-ion batteries have become the promising development direction of power batteries due to their high energy density and excellent safety performance.This paper reviews the component and characteristics of solid-state lithium-ion batteries in detail,as well as the types and research progress of solid electrolytes.Moreover,this review also briefly describes the current status of solid-state lithium-ion batteries,and focuses on the garnet-type lithium lanthanum zirconium oxide(Li7La3Zr2O12-based)solid electrolytes which have outstanding advantages in lithium ion conductivity and interface regulation.As one important component of all-solid lithium ion power batteries,the garnet-type Li7La3Zr2O12-based solid electrolytes have good ionic conductivity at room temperature,excellent metal-lithium interface compatibility,and outstanding stability under application environment.The breakthrough and development of solid electrolytes will inevitably provide a huge thrust for the future development of solid-state lithium-ion power batteries and even electric vehicles.

关 键 词：电动汽车 固态锂离子电池 固体电解质 锂镧锆氧(Li7La3Zr2O12) 安全性 

分 类 号：TQ152[化学工程—电化学工业]