Solid‐state batteries with lithium‐metal anodes have emerged as a promising alternative to traditional lithium‐ion batteries thanks to their enhanced energy density and safety. However, the integration of solid‐state electrolytes is still hindered by mechanical instabilities caused by the rigid nature of the system. Stress and strain can be transferred at the interface between electrodes and solid electrolyte, inducing material damage during cycling. To address this issue, a comprehensive understanding of the interplay between electrochemical reactions and mechanical effects is crucial. In this article, a critical review of various approaches to model the multiphysics behavior of Li‐metal solid‐state batteries is provided by analyzing their advancements and limitations. The focus lies on workflows which simulate the effect of microstructural and material property changes on the degradation processes. Continuum modeling of three key chemo‐mechanical challenges is explored: dendritic growth from Li‐metal anodes, structural instability in composite cathodes, and solid electrolyte degradation caused by the formation of unstable interphases. The conclusion highlights the existing challenges and upcoming trends in multiphysics and microscale modeling of batteries.

中文翻译：

---

固态电池中的电化学机械退化：微观尺度和多物理场建模综述


具有锂金属负极的固态电池由于其更高的能量密度和安全性，已成为传统锂离子电池的有前途的替代品。然而，固态电解质的集成仍然受到系统刚性引起的机械不稳定性的阻碍。应力和应变可以在电极和固体电解质之间的界面处传递，从而在循环过程中引起材料损坏。为了解决这个问题，全面了解电化学反应和机械效应之间的相互作用至关重要。在本文中，通过分析锂金属固态电池多物理场行为的各种方法的进步和局限性，对它们进行了批判性回顾。重点在于模拟微观结构和材料特性变化对降解过程影响的工作流程。探讨了三个关键化学机械挑战的连续体建模：锂金属负极的树枝状生长、复合阴极的结构不稳定性以及由不稳定界面形成引起的固体电解质降解。该结论强调了电池多物理场和微尺度建模的现有挑战和即将到来的趋势。