Electrochemical cell including ribbed electrode substrates

Details Electrochemical cell including ribbed electrode substrates Electrochemical cell including ribbed electrode substrates

1980-02-20

1981-07-21

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 41, H01M 208

Patent

active

042799708

ABSTRACT:
An electrochemical cell including an electrolyte retaining matrix layer located between and in contact with cooperating anode and cathode electrodes is disclosed herein. Each of the electrodes is comprised of a ribbed (or grooved) substrate including a gas porous body as its main component and a catalyst layer located between the substrate and one side of the electrolyte retaining matrix layer. Each substrate body includes a ribbed section for receiving reactant gas and lengthwise side portions on opposite sides of the ribbed section. Each of the side portions includes a channel extending along its entire length from one surface thereof (e.g. its outer surface) to but stopping short of an opposite surface (e.g. its inner surface) so as to provide a web directly between the channel and the opposite surface. Each of the channels is filled with a gas impervious substance and each of the webs is impregnated with a gas impervious substance so as to provide a gas impervious seal along the entire length of each side portion of each substrate and between the opposite faces thereof (e.g. across the entire thickness thereof).

REFERENCES:
patent: 3867206 (1975-02-01), Trocciola et al.
patent: 4017664 (1977-04-01), Breault
patent: 4035551 (1977-07-01), Grevstad
patent: 4115627 (1978-09-01), Christner et al.

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