| abstract |
The present invention is a method for producing a negative electrode active material for a non-aqueous electrolyte secondary battery. The negative electrode active material for a non-aqueous electrolyte secondary battery includes silicon compound particles, the silicon compound particles include lithium, and the negative electrode active material for a non-aqueous electrolyte secondary battery. The manufacturing method is characterized by including the following steps: a step of preparing silicon compound particles, the silicon compound particles including a silicon compound SiO x , wherein 0.5 ≦ x ≦ 1.6; and the silicon compound particles are obtained by contacting the silicon compound particles with a solution A A step of lithium silicon compound particles, the solution A contains lithium and the solvent is an ether-based solvent; and a step of heating the lithium-containing silicon compound particles. Accordingly, a method for manufacturing a negative electrode active material for a non-aqueous electrolyte secondary battery is provided, which can increase the battery capacity of the negative electrode active material, and can improve the initial efficiency and cycle characteristics. |