| abstract |
A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution, and the positive electrode includes a positive electrode current collector and a positive electrode active material layer provided in the positive electrode current collector and containing a conductive material. This conductive material is supported by a plurality of conductive supports including a carbon material and each of the plurality of conductive supports, and includes a lithium phosphate compound and a plurality of primary particles having an average particle diameter of less than 35 nm. It contains electroconductive particle. |