Fuel cell

Details Fuel cell Fuel cell

2007-12-04

2007-12-04

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

C429S006000, C429S006000, C429S047000

Reexamination Certificate

active

10472227

ABSTRACT:
A fuel cell powered by direct fuel, for example a direct methanol fuel cell, includes a polymer electrolyte membrane which includes a semi-crystalline polymer. Preferred semi-crystalline polymers include first repeat units comprising sulphonated aromatic group containing moieties linked by —SO2— and/or —CO— and/or -Q-groups, where Q is O or S and second repeat units which include aromatic group containing moieties linked by —CO— and/or Q groups.

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Kuver, A., et al.; “Comparative study of methanol crossover across electropolymerized and commercial proton exchange membrane electrolytes for the acid direct methanol fuel cell”; Electrochimica Acta, Elsevier Science Publishers, Barking, GB; vol. 43, No. 16-17; May 29, 1998; pp. 2527-2535; XP004134162.
Heinzel, A., et al; “A review of the state-of-the-art of the methanol crossover in direct methanol fuel cells”; Journal of Power Sources; vol. 84, 1999, pp. 70-74; XP002248491.
Wasmus, S., et al; “Methanol oxidation and direct methanol fuel cells: a selective review”; Journal of Electroanalytical Chemistry; vol. 461, 1999, pp. 14-31; XP002248492.

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