NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery, having high temperature preservation and recovery characteristics which are improved by modifying a negative electrode. SOLUTION: This nonaqueous electrolyte secondary battery is equipped with a positive electrode which can occlude and discharge lithium, the negative electrode which can occlude and discharge lithium, a separator and a nonaqueous electrolyte, and the positive electrode and the negative electrode are structured by applying a positive electrode material and a negative electrode material to collectors respectively. The negative electrode material contains two or more kinds of carbonaceous materials, including spheroidal methophase low temperature baked carbon.