NEGATIVE ELECTRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

In this negative electrode material for a lithium ion secondary battery, the mean interplanar spacing d002 determined by the X-ray diffraction method is 0.335 nm to 0.339 nm and the specific surface area determined by nitrogen adsorption measurement at 77 K is 0.5 m /g to 6.0 m /g, the negative electrode material containing a carbon material satisfying (1) and (2). (1) In a count-based particle size distribution, the particle diameter at which the differential relative particle amount q0 takes the most frequent value is 11.601 [mu]m or smaller. (2) In the count-based particle size distribution, the ratio (q0A/q0B) between the differential relative particle amount q0A at a particle diameter of 11.601 [mu]m, and the differential relative particle amount q0B at a particle diameter of 7.806 [mu]m is 1.20 to 3.00. 一种锂离子二次电池用负极材，其包含碳材料，所述碳材料通过X射线衍射法求出的平均面间隔d为0.335nm～0.339nm，通过在77K进行的氮吸附测定而求出的比表面积为0.5m/g～6.0m/g，且满足下述(1)和(2)。(1)在个数基准的粒度分布中，差分的相对粒子量q0成为最频值时的粒径小于或等于11.601μm。(2)在个数基准的粒度分布中，粒径为11.601μm时的差分的相对粒子量q0A与粒径为7.