石榴石基复合固态电解质的界面调控和离子传导机制  

The interface regulation and ion conduction mechanism of garnet-based composite solid electrolyte

作　　者：杨斌斌 邓成龙 陈楠[1,2] 陈人杰 YANG Binbin;DENG Chenglong;CHEN Nan;CHEN Renjie(School of Materials Science&Engineering,Beijing Institute of Technology,Beijing,100081,China;Institute of Advanced Technology,Beijing Institute of Technology,Jinan,Shandong Province,250300,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing,100081,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]北京理工大学前沿技术研究院,山东济南250300 [3]北京电动车辆协同创新中心,北京100081

出　　处：《电池工业》2024年第3期109-120,共12页Chinese Battery Industry

基　　金：国家自然科学基金项目(52272185),国家重点研发计划(2022YFB2502102),北京市杰出青年学者(BJJWZYJH01201910007023)。

摘　　要：Li_(7)La_(3)Zr_(2)O_(12)(LLZO)基复合固态电解质(CPE),因综合了聚合物的柔韧性和LLZO的高离子电导率被认为是高能量密度固态锂金属电池的有力候选。本文总结了LLZO基CPE在负极-电解质界面和正极-电解质界面的关键问题,并归纳了近年来解决电极-电解质界面离子传输问题的方法,最后结合最新表征方法和研究观点,深入分析了锂离子在LLZO基CPE中的离子传输路径。本文深入讨论了LLZO基CPE中的锂离子迁移路径和界面离子传输问题,为高能量密度固态锂金属电池的发展提供有益的参考。Li_(7)La_(3)Zr_(2)O_(12)(LLZO)-based composite solid electrolyte(CPE)has been identified as a strong candidate for high energy density solid-state lithium metal batteries due to its unique combination of polymer flexibility and the high ionic conductivity of LLZO.This paper aims to summarize the key issues related to LLZO-based CPE at the anode-electrolyte and cathode-electrolyte interfaces,and to review recent methods that have been developed to address the Li+transport problem at the electrode-electrolyte interface.Finally,this paper thoroughly investigates the Li+transport path in LLZO-based CPE using the latest characterization methods and research perspectives.Through a combination of theoretical and experimental studies,the Li+migration path and interfacial ion transport in LLZO-based CPE are discussed.It is expected that this in-depth study of LLZO-based CPE will provide useful guidance for the development of high energy density solid-state lithium metal batteries.

关 键 词：固态电池 固态电解质 石榴石 界面离子传输 离子迁移路径 

分 类 号：TM911[电气工程—电力电子与电力传动]