Chemistry: electrical current producing apparatus – product – and – Having earth feature
Patent
1980-02-04
1981-04-21
LeFevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Having earth feature
427115, 2521821, H01M 486
Patent
active
042633761
ABSTRACT:
A supported electrocatalyst for use in fuel cell electrodes wherein support carbon particles have nitrogen containing groups chemically bonded to their surface and a high surface area electrocatalyst metal or alloy thereof supported thereon, the nitrogen containing groups providing force interaction between the nitrogen containing groups and the electrocatalyst metal or alloy. Fuel cell electrodes, particularly gas diffusion electrodes, having the above described supported electrocatalyst therein. A process for production of a fuel cell electrode having the above described supported electrocatalyst. Especially preferred are amide groups chemically bonded to the carbon particles supporting a platinum catalyst and fabricated into a diffusion electrode for use in a phosphoric acid fuel cell. The fuel cell electrodes of the invention maintain high electrocatalyst surface area during fuel cell operation and thus maintain stability during extended times of fuel cell operation.
REFERENCES:
patent: 3405007 (1968-10-01), Waters
patent: 3530004 (1970-09-01), Coffield
patent: 3977901 (1976-08-01), Buzzelli
patent: 4166143 (1979-08-01), Petrow et al.
Institute of Gas Technology
LeFevour Charles F.
Speckman Thomas W.
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