Sulfonated conducting polymer-grafted carbon material for fuel cell applications
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United States of America Patent
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Jun 24, 2008
Grant Date -
Sep 2, 2004
app pub date -
Feb 25, 2004
filing date -
May 23, 2002
priority date (Note) -
Expired
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Abstract
A composition comprising particulate carbonaceous material and a sulfonated conducting polymer containing hetero atoms. The composition can further comprise a metal. Devices comprising the composition can be constructed including supported electrocatalysts, membrane electrode assemblies, and fuel cells. A method for preparing the composition comprises oxidatively polymerizing with ozone a monomer of a conducting polymer containing hetero atoms in the presence of a carbonaceous material and sulfonating the polymer or the monomer. The method grafts the sulfonated conducting polymer to the carbonaceous material. The method can further comprise metallizing the polymer-grafted carbonaceous material.
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