| abstract |
The present invention is a negative electrode material for a non-aqueous electrolyte secondary battery, which has negative electrode active material particles. The negative electrode material is characterized in that the negative electrode active material particles are composed of a silicon compound represented by SiO x and a carbon coating layer, wherein, 0.5≤x≤1.6, the carbon covering layer covers the surface of the silicon compound and is composed of carbon components, the negative electrode active material particles contain SiO2 components with a tridymite structure, and in X-ray diffraction, the diffraction obtained near 21.825° The half-value width 2θ of the peak is 0.15° or less. Thus, the present invention provides a negative electrode material for a non-aqueous electrolyte secondary battery capable of increasing battery capacity and improving cycle characteristics and initial charge-discharge characteristics. |