Editorial for focus on nanophase materials for next-generation lithium-ion batteries and beyond.

Lithium-ion batteries (LIBs) have revolutionized our society in many respects, and we are expecting even more changes in our lifestyles with newer battery technologies. In achieving these pursuits, nanophase materials play some important roles in LIBs and beyond technologies. Stimulated by these beneficial effects of nanophase materials, we initiated this Focus. Excitingly, this Focus collects 13 excellent original research and review articles related to the applications of nanophase materials in various rechargeable batteries, ranging from nanostructured electrode materials, nanoscale interface tailoring, novel separators, computational calculations, and advanced characterizations.