Manufacture of nickel hydroxide electrode of alkaline storage battery

Abstract

Abstract PURPOSE:To prevent weakening of a base plate due to corrosion by heat- processing a sintered nickel base plate impregnated with cobalt inorganic acid salt under the presence of oxygen to cover the base plate surface with cobalt oxide layer, before making filling operation with active material. CONSTITUTION:A sintered nickel base plate impregnated with cobalt inorganic acid salt or a sintered nickel base plate with cobalt hydroxide generated on the surface is heat-processed at 150-250 deg.C under the presence of oxygen to cover the base plate surface with cobalt oxide layer. The base plate is then impregnated with acid nickel salt and undergoes filling operation with active material accompanied by impregnation with acid nickel salt which is made active through alkali treatment or the like, to form a nickel hydroxide electrode of alkaline storage battery. The cobalt oxide layer is made to serve as a protective coat to prevent corrosion and weakening of the base plate. Thus efficiently of filling operation with active material can be improved by using acid nickel salt of high concentration at a high temperature.

Inventors

• 👤 Shinsuke Nakahori
• 👤 中堀　真介
• 👤 Hideki Matsui
• 👤 秀樹 松井
• 👤 Kazuhiro Oota
• 👤 和宏 太田
• 👤 Hiroyuki Isooka
• 👤 磯岡　寛行
• 👤 Harumi Fujiwara
• 👤 藤原　治美

Bibliographic Details