Negative electrode active material for charging device

2:

• The negative electrode active material for an electrical storage device according to claim 1, wherein the carbon material is soft carbon, hard carbon or a polyacene material.

3:

• The negative electrode active material for an electrical storage device according to claim 1, wherein the carbon material is one obtained by thermally treating a precursor for the carbon material at a temperature of from 600° C. to 1,500° C. in the presence of a transition metal-containing compound.

4:

• The negative electrode active material for an electrical storage device according to claim 3, wherein the transition metal is nickel and/or iron.

5:

• A lithium ion secondary battery wherein the negative electrode active material is the negative electrode material as defined in claim 1.

6:

• A lithium ion capacitor wherein the positive electrode active material is a material capable of reversibly adsorbing or desorbing lithium ions and/or anions, the negative electrode active material is the negative electrode active material as defined in claim 1, and the negative electrode and/or the positive electrode is doped with lithium ions so that the positive electrode potential after short-circuiting the positive electrode and the negative electrode becomes at most 2.0 V (vs Li/Li+).