| 摘要 |
[Problem] To provide a negative electrode for an electric device such as an Li-ion secondary cell, said negative electrode maintaining high cycle characteristics and having well-balanced characteristics including high initial capacity. [Solution] A negative electrode for an electric device, having a collector and having an electrode layer including a negative electrode active substance, a conductive assistant, and a binder that are arranged on the surface of the collector. The negative electrode for an electric device is characterized by: the negative electrode active substance including an alloy indicated by formula (1) (in the formula (1), M is at least one metal selected from a group comprising C, Nb, and a combination of same, A is unavoidable impurities, x, y, z, and a indicate values in percent by mass, 0<x<100, 0<y<100, 0<z<100, 0≤a<0.5, and x+y+z+a=100); and the elongation (δ) in the electrode layer being 1.29%<δ<1.70%. |
