Sacrificial Additives Stabilize Interfaces for Durable 5 V LiCoO2 Operation in Zr-Based Halide Solid-State Batteries.
High-voltage all-solid-state batteries (ASSBs) promise high-energy-density storage, but oxidative instability of solid-state electrolytes at cathode interfaces remains a major obstacle. Here, we report a sacrificial-additive strategy for durable, high-voltage operation of low-cost Zr-based halide ASSBs. Introducing LiP...