| abstract |
The negative electrode for an electric device includes: a current collector; and an electrode layer containing a negative electrode active material, an electrically-conductive auxiliary agent and a binder and formed on a surface of the current collector. The negative electrode active material is a mixture of a carbon material and an alloy represented by the following formula (1): Si x Sn y M z A a . . . (1) (in formula (1), M is at least one metal selected from the group consisting of Al, V, C, and combinations thereof, A is inevitable impurity, x, y, z, and a represent mass percent values and satisfy 0<x<100, 0<y<100, 0<z<100, and 0≦a<0.5, x+y+z+a=100). |