Electrochemo-Mechanical Stresses and Their Measurements in Sulfide-Based All-Solid-State Batteries: A Review,Advanced Energy Materials

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Electrochemo-Mechanical Stresses and Their Measurements in Sulfide-Based All-Solid-State Batteries: A Review
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2022-11-26 , DOI: 10.1002/aenm.202203153
Jiabao Gu ₁ , Ziteng Liang ₁ , Jingwen Shi ₁ , Yong Yang _{1,

2}

Affiliation

Sulfide-based all-solid-state batteries (ASSBs) are one of the most promising energy storage devices due to their high energy density and good safety. However, due to the volume (stress) changes of the solid active materials during the charging and discharging process, the generation and evolution of electrochemomechanical stresses are becoming serious and unavoidable problems during the operation of all-solid-state batteries due to the lack of a liquid electrolyte to partially buffer the stress generated in the electrodes. To understand these electrochemo-mechanical effects, including the origins and evolution of mechanical or internal stresses, it is necessary to develop some highly sensitive probing techniques to measure them precisely and bridge the relationship between the electrochemical reaction process and internal stress evolution. Herein, recent progress on uncovering the origins of the internal stresses, the working principle and experimental devices for stress measurement, and the application of those stress-measuring techniques in the study of electrochemical reactions in sulfide-based ASSBs are briefly summarized and overviewed. The investigation of precise and operando monitoring techniques and strategies for suppressing or relaxing these electrochemomechanical stresses will be an important direction in future solid-state batteries.

中文翻译：

基于硫化物的全固态电池的电化学机械应力及其测量：综述

基于硫化物的全固态电池（ASSB）由于其高能量密度和良好的安全性而成为最有前途的储能装置之一。然而，由于固态活性物质在充放电过程中的体积（应力）变化，电化学机械应力的产生和演化正成为全固态电池运行过程中无法避免的严重问题。一种液体电解质，用于部分缓冲电极中产生的应力。为了理解这些电化学机械效应，包括机械或内部应力的起源和演变，有必要开发一些高灵敏度的探测技术来精确测量它们，并弥合电化学反应过程和内部应力演变之间的关系。在此处，简要总结和概述了近年来在揭示内应力起源、应力测量的工作原理和实验装置以及这些应力测量技术在硫化物基全固态电池电化学反应研究中的应用进展。研究用于抑制或松弛这些电化学机械应力的精确和操作监测技术和策略将是未来固态电池的重要方向。

更新日期：2022-11-26

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