| 摘要 |
[Problem] To provide a negative electrode for an electrical device such as a lithium ion secondary battery that maintains high cycle characteristics, that has a high initial capacity, and that exhibits well-balanced characteristics. [Solution] A negative electrode for an electrical device comprising a current collector and an electrode layer that includes a negative electrode active material that is arranged on the surface of the current collector, a conductive auxiliary agent, and a binder. The negative electrode active material is produced by mixing an alloy represented by formula (1) (in formula (1), M is at least one metal selected from the group consisting of Ge, Sn, Zn, and combinations thereof, A is unavoidable impurities, x, y, z, and a represent mass% values, and on this occasion, 0 < x < 100, 0 < y < 100, 0 < z < 100, 0 ≤ a ≤ 0.5, and x + y + z + a = 100) with a carbon-based material. |
