POSITIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode material for a lithium secondary battery that has improved high-temperature characteristic including a high- temperature cycle property. SOLUTION: The positive electrode material for lithium secondary battery contains a lithium-transition metal oxide and a heterocyclic compound containing a sulfur atom as a constituent of the ring.