| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous lithium type electricity storage element which has high durability in addition to high energy density and high output density. <P>SOLUTION: The nonaqueous lithium type electricity storage element is constituted by storing, in a housing, an electrode stack, constituted by stacking a negative electrode body formed by providing a negative electrode active material layer to a negative electrode collector, a positive electrode body formed by providing a positive electrode active material layer to a positive electrode collector, and a separator, and a nonaqueous electrolyte containing an electrolyte containing lithium ions. The positive electrode active material contains, as a principal component, activated carbon which satisfies 0.3<V1≤0.8 and 0.5≤V2≤1.0, where V1 is a mesopore amount (cc/g) and V2 is a micropore amount (cc/g), and has a specific surface area of 1.500 to 3,000 m<SP>2</SP>/g, and the negative electrode active material contains, as a principal component, a hardly-graphitizable carbon material having a specific surface area of 1 to <200 m<SP>2</SP>/g. <P>COPYRIGHT: (C)2010,JPO&INPIT |
