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Electrochemical and Structural Analysis in All‐Solid‐State Lithium Batteries by Analytical Electron Microscopy: Progress and Perspectives
Author(s) -
Zhang Chunchen,
Feng Yuzhang,
Han Zhen,
Gao Si,
Wang Meiyu,
Wang Peng
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201903747
Subject(s) - materials science , characterization (materials science) , nanotechnology , lithium (medication) , scanning transmission electron microscopy , nanoscopic scale , transmission electron microscopy , electrochemistry , atomic units , electrolyte , electrode , chemistry , medicine , physics , quantum mechanics , endocrinology
Advanced scanning transmission electron microscopy (STEM) and its associated instruments have made significant contributions to the characterization of all‐solid‐state (ASS) Li batteries, as these tools provide localized information on the structure, morphology, chemistry, and electronic state of electrodes, electrolytes, and their interfaces at the nano‐ and atomic scale. Furthermore, the rapid development of in situ techniques has enabled a deep understanding of interfacial dynamic behavior and heterogeneous characteristics during the cycling process. However, due to the beam‐sensitive nature of light elements in the interphases, e.g., Li and O, thorough and reliable studies of the interfacial structure and chemistry at an ultrahigh spatial resolution without beam damage is still a formidable challenge. Herein, the following points are discussed: (1) the recent contributions of advanced STEM to the study of ASS Li batteries; (2) current challenges associated with using this method; and (3) potential opportunities for combining cryo‐electron microscopy and the STEM phase contrast imaging techniques.