Active cathode material of copper oxide particles for non-aqueous electrolyte secondary cells and their manufacturing processes, and non-aqueous electrolyte secondary cells

摘要

Cobalt oxide particles, useful as a precursor of a cathode active material for a non-aqueous electrolyte secondary cell, have a composition represented by the formula: (Co(1-x)Mgx)3O4 wherein x is 0.001 to 0.15, a BET specific surface area value of 0.5 to 50 m2/g, and an average particle diameter of not more than 0.2 mu m.