| 摘要 |
The present invention relates to a composite active material and a producing method thereof. The producing method of a composite active material comprises: a preparing process of preparing active material particles which contain at least one of cobalt, nickel and manganese atoms, and additionally contain lithium and oxygen atoms, and composite particles containing an oxide-based solid electrolyte which coats all or a part of surfaces of the active material particles; and a coating process of coating surfaces of the composite particles by a sulfide-based solid electrolyte by controlling the composite particles and a crystalline sulfide-based solid electrolyte in order that the temperature of a mixture is less than or equal to 58.6°C, and mixing the mixture while adding an energy where plastic deformation of the sulfide-based solid electrolyte occurs. |
