Fuel cells and fuel cell catalysts incorporating a nanoring support
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United States of America Patent
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Mar 13, 2012
Grant Date -
Apr 12, 2007
app pub date -
Oct 6, 2005
filing date -
Oct 6, 2005
priority date (Note) -
Expired
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Abstract
The fuel cells include electrode membrane assemblies having a nanoparticle catalyst supported on carbon nanorings. The carbon nanorings are formed from one or more carbon layers that form a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The nanorings exhibit high surface area, high porosity, high graphitization, and/or facilitate mass transfer and electron transfer in fuel cell reactions.
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