Electrode treatment method for improving performance in liquid f

Details Electrode treatment method for improving performance in liquid f Electrode treatment method for improving performance in liquid f

1998-10-16

2000-11-28

Bell, Bruce F.

Chemistry: electrical current producing apparatus, product, and

Having magnetic field feature

429 13, 429 14, 429 40, 429 42, 429 44, 429 30, H01M 800

Patent

active

061533238

ABSTRACT:
Fuel cell performance in liquid feed fuel cells with an electrode comprising a carbonaceous substrate and an electrocatalyst can be increased by oxidizing the carbon substrate, particularly by electrochemical methods in acidic aqueous solution, prior to incorporation of the electrocatalyst. The treated substrate may thereafter be advantageously impregnated with a proton conducting ionomer to prevent excessive penetration of the applied catalyst into the substrate. The treatment method is particularly effective for direct methanol fuel cell anodes.

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Pu, et al., "A Methanol Impermeable Proton Conducting Composite Electrolyte System," J. Electrochem. Soc., 142(7):L119-L120 (Jul., 1995).

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