Active mass for an electrode of an electrochemical cell, the act

Details Active mass for an electrode of an electrochemical cell, the act Active mass for an electrode of an electrochemical cell, the act

1992-07-08

1994-02-08

Gorgos, Kathryn

Compositions

Electrically conductive or emissive compositions

Metal compound containing

204280, 204284, 204290R, 429212, 429215, 429223, H01B 106, C25B 1104, H01M 460

Patent

active

052846016

ABSTRACT:
A paste for impregnating a three-dimensional metal sponge porous support, which impregnated porous support is dried to provide an electrode for an electrochemical cell. The paste comprises (i) an electrochemically active material selected from a metal hydride and a metal hydroxide in an amount of from 40% to 60% of the weight of the paste, and (ii) a gel containing xanthan in an amount of from 0.5% to 2% of the weight of the gel. The paste has a yield point greater than the shear stress due to the gravity so that the paste does not flow out of the impregnated support. Also disclosed is a method of making an electrochemical cell electrode, comprising the steps of preparing the above-described paste, impregnating the paste into a three-dimensional metal sponge porous support, and drying the paste. The inventive paste is advantageously retained in the support during the drying step.

REFERENCES:
patent: 4380578 (1983-04-01), Baharg
patent: 4906539 (1990-03-01), Terasaka et al.

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