| 摘要 |
PURPOSE:To obtain a low amalgamated zinc negative electrode having high corrosion resistance and good discharge performance by alloying zinc with a specified amount of Al and/or Mg, and adding a specified amount of In and at least one of Pb, Cd, and Sn to the zinc alloy. CONSTITUTION:Zinc alloy containing 0.05-0.5wt% indium, total 0.01-0.5wt% at least one of lead, cadmium, and tin, and total 0.005-0.2wt% aluminium and/or magnecium is used as a negative electrode 2 of a zinc alkaline battery. Since Al and Mg in the zinc alloy has lower potential than zinc, discharge utilization factor of zinc is increased. Indium in the zinc alloy increases hydrogen overvoltage of zinc alloy and moreover increases corrosion resistance of the zinc alloy by synergetic effect with Pb, Cd, and Sn. |
