| abstract |
A spinel type lithium metal composite oxide capable of exhibiting excellent high temperature storage characteristics when used as a cathode active material of a lithium battery. (OCC) of 0.965 to 1.000 as determined by the Rietveld method and a lattice strain of 0.015 to 0.090 as determined by the Williamson-Hall method, and the Na content (Fd-3m) lithium metal composite oxide characterized in that the molar ratio (Na / Mn) is 0.00 <Na / Mn <1.00 x 10 -2 . |