| 摘要 |
PURPOSE:To remarkably reduce an amalgamation rate of the negative electrode of a zinc alkaline battery by using a specific polyoxyethylene sorbitan fatty ester as the corrosion inhibitor of a negative active material. CONSTITUTION:Polyoxyethylene sorbitan fatty ester indicated in the formula is used as the corrosion inhibitor of the negative electrode of a zinc alkaline battery in which alkaline aqueous solution mainly comprising potassium hydroxide or sodium hydroxide is used as electrolyte, zinc or zinc alloy as negative active material, and manganese dioxide, silver oxide, oxygen, nickel oxyhydroxide, or mercuric oxide as positive active material. Thereby, the corrosion resistance of zinc negative electrode is increased and the zinc alkaline battery in which an amalgamation rate is low and practicality is high can be obtained. |
