Li7La3Zr2O12固态电解质负极界面研究进展
Progress of Li7La3Zr2O12 Solid Electrolyte Anode Interface
吴非 1刘涛2
作者信息
- 1. 东北大学 冶金学院, 辽宁 沈阳 110819
- 2. 东北大学 冶金学院, 辽宁 沈阳 110819;东北大学 冶金传感器材料与技术辽宁省重点实验室, 辽宁 沈阳 110819
- 折叠
摘要
石榴石型固态电解质锂镧锆氧(Li7La3Zr2O12,LLZO)具有高达5 V的宽电化学窗口,在固态电解质体系中,与金属锂负极具有良好的匹配性,使其有望成为下一代高能量电池.但LLZO与电极界面的稳定性问题极大地限制了其实际应用.本文从金属锂负极特性、LLZO电解质特性、LLZO/Li界面接触三个方面对LLZO/Li界面的稳定性问题展开分析,阐述界面稳定性的根源,同时对界面优化方法进行总结,提出LLZO/Li负极界面发展应注意的问题.
Abstract
The garnet-type solid electrolyte Li7La3Zr2O12(LLZO)has a wide electrochemical window of 5 V,and among current solid electrolyte systems,it has a good match with the metal lithium anode,which makes it promising to develop into the next-generation high-energy battery.However,the problem of contact stability between LLZO and the electrode greatly limits its practical application.In this paper,we first analyze the stability of the LLZO/Li anode interface from three aspects:the properties of lithium metal anode,the properties of LLZO solid electrolyte,the interfacial contact of LLZO and lithium metal anode.Then we also expound the root cause of interface stability,summarize the corresponding optimization method.Finally,we put forward the problems that should be paid attention to the development of the LLZO/Li anode interface as a reference to the practical application of all-solid-state lithium-ion batteries.
关键词
LLZO负极界面改性/金属锂负极/全固态锂电池/LLZO/Li界面微观机理Key words
LLZO anode interface modification/Metallic lithium anode/All-solid-state lithium battery/LLZO/Li interface micromechanism引用本文复制引用
基金项目
国家自然科学基金(51974072)
中央高校基本科研业务费专项(N2125028)
出版年
2024
国家科技期刊平台
NSTL
万方数据