| 摘要 |
PURPOSE:To obtain a nonaqueous electrolyte secondary battery having a high energy density and a long charge-and-dischrge life and being excellently safe and reliable by causing lithium or the like to be absorbed by a negative electrode material during charging and causing the negative electrode material to discharge lithium ion or the like into electrolyte during discharging by using an alloy consisting of two or more metals chosen from among tin, bismuth, cadmium and lead as the negative electrode material. CONSTITUTION:An alloy consisting of two or more metals chosen from among Sn, Bi, Pb and Cd is used as a negative electrode material so that it absorbs alkali metal ion contained in electrolyte during charging and discharges the absorbed alkali metal ion during discharging. At least one metal chosen from among In, Ca, Hg, Sb, Zn and Ag may be added to make the above alloy. |
