| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion secondary battery having a low internal resistance and a high capacity.SOLUTION: An all-solid lithium ion secondary battery comprises a sintered body in which a positive electrode layer and a negative electrode layer are stacked alternately with a solid electrolyte layer interposed therebetween. In the all-solid lithium ion secondary battery, a compound comprising lithium and boron is contained in the positive electrode layer, the negative electrode layer and the solid electrolyte layer, and the lithium amount and the boron amount contained in the compound with respect to a positive electrode active material contained in the positive electrode layer, a negative electrode active material contained in the negative electrode layer, and a solid electrolyte contained in the solid electrolyte layer are in the range of 4.38 mol% to 13.34 mol% in terms of LiCOand in the range of 0.37 mol% to 1.11 mol% in terms of HBO, respectively. |
