| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery which enables the improvement in low-temperature characteristic, a battery pack, an electronic device, an electric motor vehicle, a power storage device and an electric power system.SOLUTION: In a battery, a negative electrode-side impregnated depression region is formed between a negative electrode active material layer and a separator, which has an electrolyte and solid particles arranged therein, and includes depressions among adjacent negative electrode active material particles located in an outermost surface of the negative electrode active material layer; and a positive electrode-side impregnated depression region is formed between a positive electrode active material layer and the separator, which has the electrolyte and solid particles arranged therein, and includes depressions among adjacent positive electrode active material particles located in an outermost surface of the positive electrode active material layer. In the positive electrode-side and negative electrode-side impregnated depression regions, the concentration of the solid particles is 30 vol.% or more. |
