| 摘要 |
PURPOSE:To reduce the amalgamation rate of the negative active material of an alkaline zinc battery without deteriorating its corrosion resistance or discharge performance by using a zinc alloy containing specific amounts of indium, strontium and lead or cadmium as the negative active material. CONSTITUTION:A zinc alloy containing 0.01-0.5wt% of indium, 0.005-0.3wt% of strontium and 0.01-0.5wt% of at least one of lead and cadmium is used as the negative active material 2 of an alkaline zinc battery. Silver oxide or a similar compound is used as the positive active material 5 of the batter and an aqueous alkaline solution is used as the liquid electrolyte. Stronium is used in the negative active material 2 to enable homogeneous amalgamation of the zinc surface and indium is used to compensate for insufficient standard electric potential of the negative active material 2. Besides, lead and cadmium are used to synergistically produce improved corrosion resistance of the material 2. Accordingly, it is possible to produce an alkaline battery which produces minimal environmental pollution by reducing the amalgamation rate of the negative zinc. |
