Paste nickel electrode plate and a storage battery including an electroconductive material
AssigneeFurukawa Denchi Kabushiki Kaisha
InventorJun Furukawa
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Abstract
A paste nickel electrode plate comprising a porous metal substrate filled with a mixture of a nickel hydroxide powder used as an active material and a CoO powder used as an electroconductive material wherein the CoO powder has a covering layer containing hydroxyl groups on the surfaces of the powder particles to prevent the formation of Co.sub.3 O.sub.4 on the surfaces of the CoO powder particles. A storage battery is provided using the above-described paste nickel electrode plate as a positive electrode.
Claims10
A paste nickel electrode plate for a storage battery, comprising a porous metal substrate having the pores thereof filled with a mixture comprising a nickel hydroxide powder and a cobalt oxide powder, said cobalt oxide powder having a covering layer on the surface of the cobalt oxide powder wherein said covering layer is formed by treating cobalt oxide particles with steam.
A paste nickel electrode plate for a storage battery, comprising a porous metal substrate having the pores thereof filled with a mixture comprising a nickel hydroxide powder and a cobalt oxide powder, said cobalt oxide powder having a covering layer of cobalt hydroxide and/or CoOOH on the surface of the cobalt oxide powder particles.
A method of manufacturing an electroconductive material comprising subjecting a cobalt compound to thermal decomposition in an atmosphere containing an inert gas to form cobalt oxide powder, and maintaining said cobalt oxide powder in a moist atmosphere containing an inert gas until a covering layer of cobalt hydroxide and/or CoOOH is formed on the cobalt oxide powder particle surfaces.
Dependencies are inferred from the claim text.