Phosphoric acid fuel cells with improved corrosion resistance

Details Phosphoric acid fuel cells with improved corrosion resistance Phosphoric acid fuel cells with improved corrosion resistance

1988-12-27

1990-08-21

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

427115, H01M 802

Patent

active

049505637

ABSTRACT:
Corrosion in manifolds and ducts in phosphoric acid fuel cells can be reduced by electroplating a chromium-fluorocarbon polymer composite coating onto the exposed metal surfaces. The chromium-fluorocarbon coating displays superior corrosion protection and improved adhesion after being subjected to a plurality of heating and cooling cycles. The improved corrosion protection enhances fuel cell operating reliability and allows the use of less expensive materials in the construction of the manifolds and ducts.

REFERENCES:
patent: 3341348 (1967-09-01), Letendre
patent: 3591468 (1971-07-01), Nishio et al.
patent: 3671317 (1972-06-01), Rifkin
patent: 3942230 (1976-03-01), Nalband
patent: 4295951 (1981-10-01), Bommaraju et al.
patent: 4357262 (1982-11-01), Solomon
patent: 4666787 (1987-05-01), Bickle et al.

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