active material compound, manufacturing method for active material compound, and secondary lithium battery including active material compound

摘要

summary “active material compound, manufacturing method for active material compound, and secondary lithium battery including active material compound” an active material compound including composite particles (3) and a sulfide-based solid electrolyte (4) is proposed. The composite particles (3) contain particles of active material (1) and a solid oxide-based electrolyte (2). the active material particles (1) contain at least any of a cobalt element, a nickel element and a manganese element and further contain a lithium element and an oxygen element. The solid oxide-based electrolyte (2) coats all or part of a surface of each of the active material particles (1). the sulphide-based solid electrolyte (4) still coats 76.0% or more of one surface of each of the composite particles.