NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE AND ALKALI METAL ION BATTERY

摘要

A negative-electrode material of the present invention is a carbonaceous negative-electrode material used for an alkali metal ion battery and an average layer spacing d 002 of face (002) calculated by an X-ray diffraction method using CuK± radiation as a radiation source is equal to or greater than 0.340 nm. The halogen content of the negative-electrode material of the present invention is equal to or greater than 0.5 ppm and less than 50 ppm.