Graphite material, method for producing same, carbon material for battery electrodes, and battery
AssigneeShowa Denko K. K.
InventorsAkinori Sudoh, Yuuichi Kamijou, Masako Tanaka, Tomohiro Abe
Life of this patent
Estimating the term…
Abstract
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.
Claims17
A graphite material comprising 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.
Dependencies are inferred from the claim text.