| 摘要 |
Disclosed is a negative electrode active material for electrical devices, comprising an alloy having a composition represented by the formula: Si x C y Al z . In the composition formula: Si x C y Al z , x, y and z represent mass percent values and satisfy the following conditions: x + y + z = 100; 36 ‰¤ x < 100; 0 < y < 64; and 0 < z < 64. The negative electrode active material for electrical devices shows well-balanced characteristics to combine high cycle performance with high initial capacity and high charge/discharge efficiency. |
