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 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 condensed polycyclic heterocyclic compound that has imidazole ring or imidiazoline ring and contains a condensed polycyclic heterocyclic compound that contains at least 3 nitrogen atoms as the constituent element of the ring.