Patent ID: 6022518
Filing Date: 2000-02-08
Classification: C01B,H01M,Y02E

Abstract:
A process for producing a surface graphitized carbon material, the process comprisingcarbonizing an organic material at 400 to 1500.degree. C. to form a carbonized carbon material,contacting the carbonized carbon material with a metal having catalytically graphitizing activity or a compound thereof to thereby cause the metal or metal compound thereof to be present on a surface of the carbonized carbon material, andthen heating the carbonized carbon material at 300 to 1500.degree. C. in an inert atmosphere to thereby prepare a surface graphitized carbon material comprising a graphitic surface and a carbonaceous internal part, wherein,when Raman spectrum light intensities of the graphitic surface are measured by Ar ion laser (514.5 nm in wavelength) Raman spectroscopy, a ratio (I.sub.1480 /I.sub.1600) of an intensity I.sub.1480 of a trough appearing at 1480 cm.sup.-I and an intensity I.sub.1600 of a peak appearing at 1600 cm.sup.-1 is 0.45 or less, andan interlayer spacing of graphite layers in the surface graphitized carbon material is not less than 3.460 .ANG..