Tracking lithiation with transmission electron microscopy  

作　　者：Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]South China Academy of Advanced Optoelectronics&International Academy of Optoelectronics at Zhaoqing,South China Normal University,Guangzhou 510006,China

出　　处：《Science China Chemistry》2024年第1期291-311,共21页中国科学（化学英文版）

基　　金：supported by the National Key R&D Program of China(2020YFB2007400);the National Natural Science Foundation of China(22075317);the Strategic Priority Research Program(B)(XDB07030200)of Chinese Academy of Sciences。

摘　　要：Li-ion batteries(LIBs)have dominated energy-storage techniques for portable electronic devices and electric cars,and are expanding their territory into the large-scale energy storage.The energy storage of LIBs is realized by the reversible shuttle of lithium ions between electrodes.It is essential to track the lithium diffusion and obtain a profound insight into the lithiation mechanism during the work cycle of LIBs.Transmission electron microscopy(TEM)is a powerful tool for the structural characterization,which can provide the information about the lithiation at the atomic scale.In this review,we summarize the research frontiers of TEM applications on LIBs.We introduce the techniques for the direct observation of Li species in LIB-related materials.Especially,the application of cryo-TEM is highlighted.Moreover,in-situ TEM technique is further discussed since it shows great advantages in studying the dynamical structure changes of LIBs.The perspectives and strategies in this review offer feasible guidance for researchers to further improve the performance of LIBs.

关 键 词：lithium-ion battery electrode materials transmission electron microscopy CRYO-TEM in-situ TEM 

分 类 号：TM912[电气工程—电力电子与电力传动]