COMPOSITE ACTIVE MATERIAL PARTICLE, CATHODE, ALL-SOLID-STATE LITHIUM ION BATTERY, AND METHODS FOR PRODUCING THE SAME

摘要

A composite active material particle that can reduce battery resistance when used in an all-solid-state lithium ion battery is disclosed. The composite active material particle comprises: an active material particle; and a lithium ion conducting oxide with which at least part of a surface of the active material particle is coated, wherein the moisture content in the composite active material particle is no more than 319 ppm.