POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE, AND LITHIUM ION BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a sulfide-based positive electrode active material for a lithium ion battery, which enables the materialization of a lithium ion battery having a large capacity density.SOLUTION: A positive electrode active material for a lithium ion battery according to the present invention comprises: a compound expressed by the following general formula (1): LiTiMS. In the general formula (1), X, Y and Z satisfy the relation given by: 2≤X≤20, 0