| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative active material made of material having both a function absorbing and releasing ions, and a function conducting electrons. SOLUTION: By using the negative active material comprising carbon of porous structure having three-dimensional mutual through holes passing through amorphous carbon which is a base material, three-dimensionally spreading in a net shape, and having an average passing through width of 0.05-5μm, the specific surface area of the negative active material is increased, and the negative active material increasing the absorbing-releasing amount of ions is provided. COPYRIGHT: (C)2007,JPO&INPIT |
