CARBON MATERIAL, NEGATIVE ELECTRODE, SECONDARY BATTERY, METHOD FOR MANUFACTURING CARBON MATERIAL, METHOD FOR MANUFACTURING NEGATIVE ELECTRODE, AND METHOD FOR MANUFACTURING SECONDARY BATTERY

원문 (중국어)

A carbon material containing graphite particles. The graphite particles are natural graphite coated with an amorphous carbonaceous substance. When the carbon material is included in an electrode fabricated by adding a binder resin and a dispersion medium to the carbon material to form a slurry, applying the slurry to a metal current collector, drying the applied slurry to form an active material layer on the metal current collector, and then pressing the active material layer such that the active material layer has a density of 1.65 g/cm, the carbon material has an orientation parameter intensity ratio I(002)/I(110) of from 200 to 1200, where I(110) is a peak intensity corresponding to a lattice plane (110) and I(002) is a peak intensity corresponding to a lattice plane (002), and both I(110) and I(002) are obtained by a wide-angle X-ray diffraction measurement.