LITHIUM MANGANESE MULTIPLE OXIDE, POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY CELL, POSITIVE ELECTRODE FOR LITHIUM SECONDARY CELL AND MANUFACTURING METHOD OF LITHIUM SECONDARY CELL AND LITHIUM MANGANESE MULTIPLE OXIDE

摘要

PROBLEM TO BE SOLVED: To improve the initial discharge capacitive characteristics of a positive electrode active material useful as a positive electrode material of a lithium secondary cell and composed of a lithium manganese multiple oxide. SOLUTION: In the lithium manganese multiple oxide, the peak intensity ratio (A/B) of the deffraction peak intensity (A) observed at 15.3±1.0 deg. to the diffraction peak intensity (B) observed at 18.2±1.0 deg. in a powder X-ray diffraction under the following measurement condition is expressed by 0.001