| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbon material which can keep the surface-modified properties for a long period of time, and to provide a method for producing the same. <P>SOLUTION: The carbon material is surface modified by a sulfonic group and a fluorine atom, in which the surface-modifying fluorine atom and the sulfonic group have the relation: (content of fluorine atoms ×0.5)>(sulfonic group) in the molar ratio. The method for producing it comprises a process for obtaining the surface-modified carbon material by the sulfonic group by reacting the carbon material with a source of the sulfonic group, and a process for obtaining the surface-modified carbon material by the sulfonic group and the fluorine atom by reacting the surface-modified carbon material by the sulfonic group with fluorine gas. <P>COPYRIGHT: (C)2008,JPO&INPIT |
