New Fuel Cell Catalyst Up To Five Times More Effective
source: http://www.sciencedaily.com/releases/2009/05/090514153022.htm
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- DeliaTheArtist
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"Material scientists at Washington University in St. Louis have developed a technique for a bimetallic fuel cell catalyst that is efficient, robust and two to five times more effective than commercial catalysts. The novel technique eventually will enable a cost effective fuel cell technology, which has been waiting in the wings for decades, and should give a boost for cleaner use of fuels worldwide.
"There are two ways to make a more effective catalyst," Xia says. "One is to control the size, making it smaller, which gives the catalyst a higher specific surface area on a mass basis. Another is to change the arrangement of atoms on the surface. We did both. You can have a square or hexagonal arrangement for the surface atoms. We chose the hexagonal lattice because people have found that it's twice as good as the square one for the oxygen reduction reaction.
"We're excited by the technique, specifically with the performance of the new catalyst."
he Department of Energy has estimated for widespread commercial success the "loading" of platinum catalysts in a fuel cell should be reduced by four times in order to slash the costs. The Washington University technique is expected to substantially reduce the loading of platinum, making a more robust catalyst that won't have to be replaced often, and making better use of a very limited and very expensive supply of platinum in the world."
"There are two ways to make a more effective catalyst," Xia says. "One is to control the size, making it smaller, which gives the catalyst a higher specific surface area on a mass basis. Another is to change the arrangement of atoms on the surface. We did both. You can have a square or hexagonal arrangement for the surface atoms. We chose the hexagonal lattice because people have found that it's twice as good as the square one for the oxygen reduction reaction.
"We're excited by the technique, specifically with the performance of the new catalyst."
he Department of Energy has estimated for widespread commercial success the "loading" of platinum catalysts in a fuel cell should be reduced by four times in order to slash the costs. The Washington University technique is expected to substantially reduce the loading of platinum, making a more robust catalyst that won't have to be replaced often, and making better use of a very limited and very expensive supply of platinum in the world."
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- recommended by:
- ras_menelik
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02
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If they just had a little imagination, - they could work wonders...
- 3 years ago
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jh64487
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more evidence that the "we don't have the tech" crowd is nothing more than inbred morons. we haven't developed the tech yet maybe, but we can do so incredibly rapidly if we just put some resources into it.
first powered flight to moon in 60 years. we can do this.
- 3 years ago
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jh64487
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boywhocould
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Interesting... sad though that they are still trying to use platinum
http://www.reuters.com/article/environmentNews/idUSL1461117220070914 - 3 years ago
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boywhocould
