Method for producing electrode material for lithium ion batteries

A method of producing a graphite material for an electrode material for a lithium ion battery, the method including a graphitizing step of directly passing an electric current through a carbon material from an electrode in direct contact with the carbon material to cause the material to generate heat, in which carbon material 1 before the graphitization has a compact powder resistivity of 0.4 Ω·cm or less when compressed to a density of 1.4 g/cm3, has an angle of repose of 20° or more and 50° or less, and has a particle size D90 of 120 μm or less in a volume-based particle size distribution measured by a laser diffraction method, and carbon material 2 after the graphitization has an average interplanar spacing d002 of a (002) plane measured by an X-ray diffraction method of 0.3354 nm or more and 0.3450 nm or less, in which a rectangular parallelepiped furnace body made of ceramic bricks and having an opening in an upper portion thereof is used in the graphitizing step,

• wherein the carbon material 1 before the graphitization is obtained by subjecting an organic carbon raw material to a heat treatment, and
• wherein a pulverization for the organic carbon raw material is performed before the heat treatment.