Activating Redox Kinetics of Li2S via Cu+, I− Co‐Doping Toward High‐Performance All‐Solid‐State Lithium Sulfide‐Based Batteries

All-solid-state lithium sulfide-based batteries (ASSLSBs) have drawn much attention due to their intrinsic safety and excellent performance in overcoming the polysulfide shuttle effect. However, the sluggish kinetics of Li