Method of operating an electrochemical cell stack

Details Method of operating an electrochemical cell stack Method of operating an electrochemical cell stack

1987-11-02

1989-04-25

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 35, 429 41, 296232, H01M 804

Patent

active

048247391

ABSTRACT:
A seal structure 60 for a porous plate of an electrochemical cell, such as plates 18, 20, includes a sealing material disposed in a seal region 66 of the plate to form a hydrophilic barrier to gas with an electrolyte and a hydrophobic layer 62 to block the loss of electrolyte from the hydrophilic layer is disclosed. Various construction details including a method for making the plate are disclosed which increase the cross pressure the sealing region of the plate can withstand. In one embodiment, the seal region 66 is impregnated with powder having a low structure and predetermined particle size using a pressurized liquid carrier. A FEP Teflon film bonds adjacent electrolyte reservoir plates together.

REFERENCES:
patent: 3867206 (1975-02-01), Trocciola et al.
patent: 4129685 (1978-12-01), Damiano
patent: 4269642 (1981-05-01), DeCasperis et al.
patent: 4365008 (1982-12-01), DeCasperis et al.
patent: 4505992 (1985-03-01), Dettling et al.
patent: 4652502 (1987-03-01), Breault et al.

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