LITHIUM COBALTATE-BASED ACTIVE MATERIAL OF POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To obtain a lithium cobaltate-based active material of positive electrode for lithium secondary battery capable of manifesting an excellent discharge capacity retention and having high reliability. SOLUTION: This lithium cobaltate-based active material of positive electrode for lithium secondary battery has a lattice constant of the c-axis of a lithium cobaltate crystal within the range of 14.040-14.050 Å and the direction of the (003) face within the range of 500-900 Å. The lithium secondary battery uses the positive electrode containing the lithium cobaltate-based active material.