Lithium metal solid-state batteries (LiSSBs) present new challenges in the measurement of material, component, and cell mechanical behaviors and in the measurement and theory of fundamental mechanical-electrochemical (thermodynamics, transport, and kinetics) couplings. Here, we classify the major mechanical and electrochemical-mechanical (ECM) studies underway and provide an overview of major mechanical testing platforms. We emphasize key distinctions among testing platforms, including tip- vs. platen-based sample compression, surface- vs. volume-based analysis, ease of integration with a vacuum or inert atmosphere environment, the ability to control and measure force/displacement over long periods of time, ranges of force and contact area, and others. Among the techniques we review, nanoindentation platforms offer some unique benefits associated with being able to use both tip-based nanoindentation techniques as well as platen-based compression over areas approaching 1 mm². Sample design is also important: while most efforts are particle-based (i.e., using particles of solid electrolyte and cathode-active materials and densifying them using sintering or pressure), the resulting electrochemical response is from the overall collection of particles present. In contrast, thin-film (<1 μm) solid-state battery materials (e.g., Li, LiPON, LCO) provide well defined and uniform structures well suited for fundamental electrochemical-mechanical studies and offer an important opportunity to drive underlying scientific advances in LiSSB and other areas. We believe there are exciting opportunities to advance the measurement of both mechanical properties and electrochemical-mechanical couplings through the careful and novel co-design of test structures and experimental approaches for LiSSB materials, components, and cells.

锂金属固态电池 (LiSSB) 在材料、组件和电池机械行为的测量以及基础机械-电化学（热力学、传输和动力学）耦合的测量和理论方面提出了新的挑战。在这里，我们对正在进行的主要机械和电化学机械 (ECM) 研究进行了分类，并概述了主要的机械测试平台。我们强调测试平台之间的主要区别，包括基于尖端与压板的样品压缩、基于表面与基于体积的分析、易于与真空或惰性气氛环境集成、长时间控制和测量力/位移的能力时间段、力的范围和接触面积等。在我们审查的技术中，^2个. 样品设计也很重要：虽然大多数努力都是基于粒子的（即，使用固体电解质和阴极活性材料的粒子，并使用烧结或压力使它们致密化），但由此产生的电化学响应来自存在的粒子的整体集合。相比之下，薄膜（<1 μm）固态电池材料（例如 Li、LiPON、LCO）提供明确且均匀的结构，非常适合基础电化学-机械研究，并为推动基础科学进步提供了重要机会LiSSB等领域。我们相信，通过对 LiSSB 材料、组件和电池的测试结构和实验方法的仔细和新颖的协同设计，有令人兴奋的机会来推进机械性能和电化学-机械耦合的测量。