| abstract |
Disclosed is a negative electrode for an electric device such as a Li ion secondary battery that maintains a high cycle characteristic and has a high initial capacity and a well-balanced characteristic. A negative electrode for an electrical device, comprising: a current collector; and a negative electrode active material disposed on a surface of the current collector, a conductive assistant, and an electrode layer containing a binder, wherein the negative electrode active material is The following formula (1): (In the above formula (1), M is at least one metal selected from the group consisting of Ge, Sn, Zn, and combinations thereof, A is an inevitable impurity, x, y, z, and a represents a value by mass, where 0 <x <100, 0 <y <100, 0 <z <100, and 0 ≦ a <0.5, and x + y + z + a = 100. A negative electrode for an electrical device, which is a mixture of an alloy represented by the above and a carbon-based material. [Selection] Figure 1 |