了解并揭示固态电池中的电化学机械行为

SusMat Pub Date : 2024-03-04 DOI:10.1002/sus2.190
Yunlei Zhong, Xia Zhang, Yong Zhang, Peng Jia, Yuebin Xi, Lixing Kang, Zhenjiang Yu
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引用次数: 0

摘要

固态电池(SSB)作为一种长效、热弹性和高安全性的储能系统,正吸引着越来越多的关注。作为电池化学的新兴领域,固态电池存在许多问题,包括强还原性锂阳极、氧化阴极(电荷状态)、固态电解质(SSE)的热力学稳定性极限以及无处不在的关键界面。在这篇综述中,我们概述了固态电解质开发过程中的主要障碍,例如锂阳极|固态电解质界面、阴极|固态电解质界面、固态电解质中的锂离子传输、锂侵入的根源以及枝晶引起的安全问题。了解和克服这些障碍至关重要,但也极具挑战性,因为电极与 SSEs 密切接触的局部性和埋藏性使得直接检测变得困难。我们回顾了先进的表征技术,并讨论了一直困扰电化学家的复杂离子/电子传输机制。最后,我们重点研究并揭示了发生在锂阳极、阴极、SSE 及其他部分的电化学-机械耦合行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Understanding and unveiling the electro‐chemo‐mechanical behavior in solid‐state batteries
Solid‐state batteries (SSBs) are attracting growing interest as long‐lasting, thermally resilient, and high‐safe energy storage systems. As an emerging area of battery chemistry, there are many issues with SSBs, including strongly reductive lithium anodes, oxidized cathodes (state of charge), the thermodynamic stability limits of solid‐state electrolytes (SSEs), and the ubiquitous and critical interfaces. In this Review, we provided an overview of the main obstacles in the development of SSBs, such as the lithium anode|SSEs interface, the cathode|SSEs interface, lithium‐ion transport in the SSEs, and the root origin of lithium intrusions, as well as the safety issues caused by the dendrites. Understanding and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection difficult. We reviewed advanced characterization techniques and discussed the complex ion/electron‐transport mechanism that have been plaguing electrochemists. Finally, we focused on studying and revealing the coupled electro‐chemo‐mechanical behavior occurring in the lithium anode, cathode, SSEs, and beyond.
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