| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery improved in performance at high temperatures and having an improved high-current discharge characteristic and to provide its manufacturing method. SOLUTION: In relation to this lithium secondary battery and its manufacturing method, a least one of a cathode active material composition 11, an anode active material composition 13 and a high-polymer electrolyte composition 12 contains a compound selected from a group comprising: polyvinylidene fluoride, a vinylidene fluoride-hexafluoropropylene copolymer of which content of hexafluoropropylene is 0-8 mass %, a mixture of a vinylidene fluoride- hexafluoropropylene copolymer of which content of hexafluoropropylene copolymer is 0-8 mass % and polyvinylidene fluoride, and a mixture of the vinylidene fluoride-hexafluoropropylene copolymer of which content of hexafluoropropylene is 0-8 mass % and a vinylidene fluoride-hexafluoropropylene copolymer of which content of hexafluoropropylene is 0-15 mass %. |
