| 摘要 |
PROBLEM TO BE SOLVED: To relax remaining stress according to lithium ion diffusion within solid electrolyte particles, eliminate deterioration in internal resistance over a long period of time, and provide a battery with small capacity deterioration. SOLUTION: A lithium secondary battery assembled by interposing a solid electrolyte 5 between a positive electrode and a negative electrode both made of an active material and sealing them in an outer package has the solid electrolyte made of a sintered body containing a lithium transition metal composite oxide having at least one kind of layer structure of Li2MnO3, Li2TiO3, and α-LiAlO2. |
