Ultrastable Cycling of Sodium Metal Battery at Rates Exceeding 20 C Achieved with a NaB3H8-SiO2 Composite Solid Electrolyte.
Solid-state sodium metal batteries are promising candidates for grid-scale energy storage due to their inherent safety and low cost. However, the development of solid electrolytes that support high-rate (>20 C) cycling for fast-charging applications remains a major challenge. Herein, we explore how adding SiO2 affects...