| 摘要 |
PURPOSE:To obtain an overall efficiency of excellent discharge, preservation, and antileakage properties and the like with little environmental pollution, by applying a zinc alloy containing Zn as the main component, and specific ratio of In, Mg, Ca, and Te as a negative electrode. CONSTITUTION:For a negative electrode 2 of a zinc alkaline type cell, a zinc alloy containing Zn as the main component, 0.005-0.5wt% of In, 0.005-0.2wt% of Mg, and 0.01-0.5wt% of at least either Ca or Te is used as an active substance. Mg fanctions to smooth the surface of the zinc alloy powder and reduce the surface area. Although Mg is more easily corroded than Zn, In is compounded with Mg to negate the bad influence of Mg. Moreover, by adding Ca or Te to Zn added with In and Mg, the anticorrosion of the alloy can be remarkably improved. In such a composition, an anticorrosive zinc anode with a low mercurating rate is realized, and a zinc alkaline cell of excellent discharge and preservative properties with little environmental pollution can be obtained. |
