Positive electrode active material for a non-aqueous electrode cell and non-aqueous electrode cell using the same

摘要

The present invention enables to obtain both of a cycle characteristic and a high load characteristic. The present invention discloses a positive electrode active material containing lithium composite manganese oxide having a spinel structure for a non-aqueous electrolyte cell and a non-aqueous electrolyte cell using this material. The lithium composite manganese oxide having spinel structure has its primary particle diameter not less than 0.05 mum and not greater than 10 mum, forming an aggregate, and a specific surface measured by the BET method in a range not less than 0.2 m2/g and not greater than 2 m2/g.