Solid-state batteries enabled by ultra-high-frequency self-heating

Solid-state batteries (SSBs) promise improved safety and higher energy density over today’s lithium-ion batteries (LIBs), but their poor performance at room temperature has limited widespread use. We demonstrate a fast, non-invasive self-heating method that warms SSBs to optimal operating temperature in under a minute using ultra-high-frequency electrical pulses. This approach requires no structural changes, adds minimal energy cost, and is scalable to commercial battery packs. It opens new opportunities to reduce the range anxiety of electric vehicles and provides reliable cold starting. By introducing a more suitable thermal strategy than those conventionally used in liquid-electrolyte batteries, this work may shift how SSBs are managed, potentially accelerating their adoption in next-generation energy storage and transportation systems.