Structural Design Principles for Minimal‐Volume‐Change Anodes in Next‐Generation Sulfide Solid‐State Batteries

ABSTRACT Sulfide‐based all‐solid‐state batteries (ASSBs) are regarded as next‐generation energy storage systems due to their high safety and energy density. However, the mechanical stress arising from electrode volume changes during cycling, especially at the anode–electrolyte interface, imposes more severe constraints on cycle life and commercial prospects than cathode‐related volume variations. This review summarizes the recent progress in low‐strain anode materials for sulfide‐based ASSBs. We firstly categorize the design strategies and performance characteristics of several low‐strain systems, including metal–organic frameworks (MOFs), alloy‐based anodes, silicon‐based anodes, and composite anodes, with particular emphasis on interfacial optimization and structural stabilization mechanisms. And then, we address the key challenges in translating material innovations into scalable manufacturing processes. By identifying current research bottlenecks and outlining future directions, this review aims to provide theoretical insight and practical guidance for both fundamental studies and industrial applications of low‐strain anodes in sulfide‐based ASSBs.