LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To improve a low-temperature property in a lithium secondary battery that is constituted from a positive electrode in which lithium containing complex oxide is used as an active material, a negative electrode which is composed of carbonaceous materials wherein occlusion and emission of lithium ion is electrochemically possible, a separator, and a nonaqueous electrolytic solution. SOLUTION: By adding Co3O4 which has a surface area of specific range, an electro-conductivity of positive electrode can be enhanced and a lithium secondary battery which can be superior in the low-temperature property can be provided.