| 摘要 |
PROBLEM TO BE SOLVED: To provide a superior performance ensuring high-energy density and a cycle life, free from short-circuits due to dendrite by using a mixture of metallic or semi-metallic powder containing at least a phosphorus, a carbon material and a binding agent as a negative electrode. SOLUTION: Al, Sn, Si, Pb, Cd, Bi, In, Zn, Ga, B, Au and Pt, when made to contain P, improve the cycle characteristic thereof by leaps and bounds. The P content is preferably between 1wt.% and 50wt.%, and the content between 1wt.% and 15wt.% is particularly preferable. The mechanical strength of a metal is improved as a result of containing P, thereby restraining fine pulverization, due to the repetition of light discharge. Also, Mo, Mg, Fe, Mn, Co, Ni, Ta, Cr, W, Ti, V and the like become capable of performing a charging and discharging process by containing P. In this case, the P content is preferably between 1wt.% and 50wt.%, and the content between 5wt.% and 15wt.% is particularly preferable. A new Li storage site is formed when these metals turn into a solid solution state like metallic grating. |
