Zinc electrode for alkaline zinc storage battery

Abstract

Abstract PURPOSE:To increase the cycle life of a zinc electrode for an alkaline zinc storage battery by forming the electrode by the use of zinc and zinc oxide used as principle components as well as an oxide of indium, indium metal, polyvinylalcohol and a binding agent. CONSTITUTION:After water is added to mixlture consisting of 74wt% zinc oxide powder, 10wt% zinc powder, 5wt% indium oxide used as an additive, 5wt% indium oxide used as an additive, 5wt% indium metal, 1wt% polyvinylalcohol and 5wt% fluorine resin powder used as a binding agent, the mixture is kneaded before being formed into a sheet-like shape. Next, the thus formed sheet-like member is affixed to a current collector made of copper and the like, thereafter being subjected to pressure molding, thereby making a zinc electrode 1. After that, a nickel-zinc storage battery is constituted by combining the zinc electrode 1 with a nickel electrode 2 and alkaline electrolyte. As a result, the appearance of areas in which the electrolyte is deficient can be suppressed by reducing the movement of the electrolyte in the zinc electrode 1 owing to polyvinylalcohol contained in it, thereby the cycle life of the zinc electrode 1 can be improved.

Inventors

• 👤 Sanehiro Furukawa
• 👤 古川　修弘
• 👤 Shuzo Murakami
• 👤 修三 村上

Bibliographic Details