| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a negative electrode active material for an electricity storage device, the negative electrode active material having a favorable initial charge/discharge characteristics.SOLUTION: A method for producing a negative electrode active material for an electricity storage device includes: (1) a mixing step of mixing an oxide material containing SnO(0<x≤2) and a reductant to obtain a mixture; and (2) a reduction step of imparting energy to the mixture to reduce SnOinto metal Sn. |
