| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery capable of securing high safety.SOLUTION: The secondary battery includes a positive electrode and a negative electrode opposed through a separator, and an electrolyte. The positive electrode includes a positive electrode current collector and a positive electrode active material layer provided between the positive electrode current collector and the separator, and the negative electrode includes a negative electrode current collector and a negative electrode active material layer provided between the negative electrode current collector and the separator. In a region between the positive electrode current collector and the negative electrode current collector, at least one of the positive electrode, the negative electrode, and the separator contains a plurality of thermally conductive particles, in which a thermal conductivity of the thermally conductive particles in a second direction crossing a first direction is larger than that in the first direction where the positive electrode and the negative electrode face each other. |
