GRAPHITE MATERIAL AND ELECTRODE MATERIAL USING SAME

摘要

The objective of the present invention is to provide an electrode material which has low initial irreversible capacity and with which an electrochemical element having excellent cycle characteristics can be obtained, and a graphite material used for the electrode material. This graphite material has a specific surface area of 0.1 to 30 m2/g, and in a spectrum obtained by laser Raman Spectroscopy at an excitation wavelength of 532 nm, has an intensity ratio R (ID/IG) of a peak intensity (ID) near 1360 cm-1 and a peak intensity (IG) near 1580 cm-1 of 0.60 to 1.30, and an intensity ratio S (I1520/IG) of an intensity (I1520) at 1520 cm-1 and a peak intensity (IG) near 1580 cm-1 of 0.55 to 0.70.