| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a carbon material for lithium ion secondary battery capable of achieving a lithium ion secondary battery with high charge and discharge capacity and high current density during charge and discharge, negative electrode material for lithium ion secondary battery, and such a lithium ion secondary battery. <P>SOLUTION: The carbon material for lithium ion secondary battery is porous and is not less than 80% and not more than 98% in a sum ratio of a total volume of meso holes in a total vacancy volume owned by carbon material and a total volume of macro holes, and not less than 0.005 ml/g and not more than 0.030 ml/g in the volume of the macro holes per unit weight of the carbon material. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
