| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery with high performance, high energy density, and an excellent high load characteristic as well as preventing the generation of short circuit on the inside of the battery in the assembly process of the battery. SOLUTION: This lithium secondary battery is composed of a positive electrode layer containing at least a lithium-containing metal oxide or a metal oxide as an active material, a negative electrode layer containing at least lithium metal, a lithium alloy, or a carbon material as an active material, and a polymer layer interposed between both layers, and the positive electrode layer and/or the negative electrode layer contain/contains a polymer electrolyte matrix, and the ionic conductivity of a polymer electrolyte constituting the polymer electrolyte layer is made lower than that of a polymer electrolyte constituting the polymer electrolyte matrix. |
