| 摘要 |
<p>A rechargeable negative pole for an electrochemical apparatus using a non-aqueous electrolyte is made of an alloy consisting essentially of one element selected from the group of Sn, Pb, In and Bi, with Zn or Zn and Cd. A rechargeable electrochemical apparatus is provided with a combination of this negative pole and a positive pole, and can be reversibly charged. When immersed in a non-aqueous electrolyte containing alkali metal ions, the negative pole reversibly occludes and emits the alkali metal ions by this charge and discharge. The negative pole has a long charge-and-discharge life, since however many times the charge and discharge is repeated, the negative pole is not fragmented, and the negative pole maintains its electrode configuration stably. In addition, since the amount of alkali metal occluded per unit volume is large, the energy density is high. </p> |
