| abstract |
A positive electrode material of an electricity storage device maintaining a high capacity at a high output density is provided. n In a positive electrode material of a nonaqueous lithium-based electricity storage device comprising a lithium ion storing and desorbing material as a negative electrode active substance, an activated carbon is used for a positive electrode active substance of the positive electrode material and satisfies the following expressions: n 0.3<V1≦0.8 and 0.5≦V2≦1.0, n where V1 (cc/g) represents a mesopore volume for a pore having a diameter of 20 Å to 500 Å and V2 (cc/g) represents a micropore volume for a pore having a diameter of less than 20 Å. |