Outside Front Cover: Volume 5 Issue 1

Outside Front Cover: Visualized in the context of a sodium-powered future, Y. Lei et al. systematically summarize the essential interface engineering required to advance solid-state sodium metal batteries (SSSBs) in this review (doi: 10.1002/idm2.70023). As illustrated on the cover, it focuses on the role of interface engineering in addressing challenges such as materials design and interfacial modification strategies. Meanwhile, this work bridges the gap between multiscale characterization and mechanistic analysis, offering a comprehensive roadmap for achieving the high-performance interfaces required for next-generation energy storage.