Sintered nickel electrode for alkaline storage battery, method of forming the same, and alkaline storage battery
AssigneeSanyo Electric Co., Ltd.
InventorsYuki Morikawa, Takeshi Ogasawara, Mitsunori Tokuda, Mutsumi Yano, Shin Fujitani
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Abstract
In a sintered nickel electrode for alkaline storage battery formed by filling nickel hydroxide as an active material into a porous sintered substrate and an alkaline storage battery using as its positive electrode the sintered nickel electrode for alkaline storage battery, tungstic acid is adhered to a surface of said nickel hydroxide as an active material.
Claims8
A sintered nickel electrode for alkaline storage battery is provided with a porous sintered substrate and an active material consisting of nickel hydroxide to be filled into the porous sintered substrate, wherein
- tungstic acid is adhered to a surface of said nickel hydroxide.
A method of forming a sintered nickel electrode for alkaline storage battery comprising steps of:
- filling nickel hydroxide as an active material into a porous sintered substrate,
- immersing said sintered substrate having nickel hydroxide filled into an aqueous solution of tungsten salt to impregnate the tungsten salt therein, and
- immersing said sintered substrate having the tungsten salt impregnated into an alkaline aqueous solution to deposit said tungsten salt on a surface of the nickel hydroxide as tungstic acid.
Dependencies are inferred from the claim text.