SPINEL TYPE LITHIUM MANGANESE OXIDE FOR SECONDARY BATTERY AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide lithium manganese oxide for secondary battery superior in both of a capacity maintaining rate and high temperature characteristics without largely deteriorating the initial discharge capacity. SOLUTION: This lithium manganese oxide for secondary battery is expresses by a formula LiMnx-y My O4 (where, (x) is 1.8 to 2.1, (y) is 0.01 to 0.1, and M is transition metal except A1 or Mn). A peak intensity ratio in X-ray diffraction is a 311 face <400 face and a lattice constant is 8.200 to 8.250. The metal is any at least one kind selected among Fe, Cr and Al.