▎ 摘　　要

NOVELTY - Solid-state battery comprises a solid-state battery cathode comprising an active material comprising multiple particles provided to form the solid-state battery cathode. The multiple particles are provided by a D50 diameter of 10-200 mu m. The multiple particles comprise a microstructure formed from multiple crystalline grains. A solid-state interfacial coating is provided with a crystalline material, where the solid-state interfacial coating is coated on to the multiple particles. A solid-state battery anode and a solid electrolyte separator are positioned between the solid-state battery cathode and the solid-state battery anode to form the solid-state battery. USE - Solid-state battery. ADVANTAGE - The solid-state battery enables to initiate and maintain intimate interfacial contact between electrolyte and the electrodes, allows or facilitates adequate or improved initial capacity or rate performance of a solid-state battery, and may support efficient and effective charging and discharging cycles of solid-state battery cathode without impacting the energy density or workable life of solid-state battery, and has reversible electrochemical capabilities allowing for repeated charging and discharging cycles with minimal impacts to the energy density or workable life of the solid-state battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for making a solid-state battery cathode, which involves: (A) providing an active material; (B) filtering the active material to form particles; (C) coating the particles with an interfacial coating; (D) forming crystalline grains within the particles by heating the particles at 350-600 degrees C; (E) mixing a solid electrolyte powder with the particles to form a dry cathode mixture; and (F) pressing the dry cathode mixture to form the solid-state battery cathode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the solid-state battery cathode. Solid-state battery cathode (502B) Particles (510) Coating (522)