| 摘要 |
A graphite material suitable as an electrode material for non-aqueous electrolytic secondary batteries; a method for producing the same and a carbon material for battery electrodes; and a secondary battery. The graphite material includes crystallite graphite particles wherein an oxygen amount (a) (mass %) in a region from a particle surface of the graphite material to a depth of 40 nm is within a range of 0.010≦̸(a)≦̸0.04 as determined by a peak intensity of O1s obtained by HAX-PES measurement using a hard X-ray of 7,940 eV. |
