Sep, 2026
Journal
Self-generated phosphate/oxysulfide passivation from dry-processed single-crystal NMC811 stabilizes argyrodite sulfide solid-state battery interfaces
Pushing sulfide all solid-state batteries (SSBs) beyond 500 Wh kg⁻¹ requires high voltage, high loading layered cathodes without accelerating sulfide electrolyte decomposition or losing interfacial contact. Polycrystalline NMC811 commonly fails under these conditions due to grain-boundary oxygen release, chemo-mechanical cracking, and growth of resistive cathode–electrolyt…