Negative electrode material for lithium-ion secondary battery, negative electrode for lithium-ion secondary battery, lithium-ion secondary battery, and method for producing negative electrode material for lithium-ion secondary battery

Abstract

There is provided a negative electrode material for a lithium-ion secondary battery, which is graphite particles that satisfy the following (1) and (2): (1) A slope k of a linear approximation straight line, with an electrode density d (g/cm3) as an explanatory variable and an orientation I002/I110, which is a ratio of the peak intensity (I002), of the 002 diffraction line to the peak intensity (I110) of the 110 diffraction line obtained by X-ray diffraction measurement, as a dependent variable, is 930 or less. (2) A compression load, which is a magnitude of pressure required to compress the material to a density of 1.7 g/cm3, is 1.85 kN/cm2 or more.

Dependencies are inferred from the claim text.