Solid-state batteries (SSBs) could exhibit improved safety and energy density compared with traditional lithium-ion systems, but fundamental challenges exist in integrating solid-state electrolytes with electrode materials. In particular, the (electro)chemical evolution of electrode materials and interfaces can often be linked to mechanical degradation due to the all-solid nature of these systems. This review presents recent progress in understanding the coupling between chemistry and mechanics in solid-state batteries, with a focus on three important phenomena: (i) lithium filament growth through solid-state electrolytes, (ii) structural and mechanical evolution at chemically unstable interfaces, and (iii) chemo-mechanical effects within solid-state composite electrodes. Building on recent progress, overcoming chemo-mechanical challenges in solid-state batteries will require new in situ characterization methods and efforts to control evolution of interfaces.

与传统的锂离子系统相比，固态电池（SSB）可以表现出更高的安全性和能量密度，但是在将固态电解质与电极材料集成在一起方面存在根本性的挑战。特别地，由于这些系统的全固态特性，电极材料和界面的（电）化学演化通常可以与机械性能下降联系在一起。这篇综述介绍了了解固态电池中化学与力学之间耦合的最新进展，重点是三个重要现象：（i）锂丝通过固态电解质生长，（ii）化学不稳定界面上的结构和机械演化（iii）固态复合电极内的化学机械效应。以最近的进展为基础，原位表征方法和控制界面演化的努力。