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Brookhaven Lab Scientists Discover Gold Clusters Stabilize Platinum Electrocatalysts For Use in Fuel Cells
01-11-2007 · Brookhaven National LaboratoryPlatinum is the most efficient electrocatalyst for accelerating chemical reactions in fuel cells for electric vehicles. In reactions during the stop-and-go driving of an electric car, however, the platinum dissolves, which reduces its efficiency as a catalyst. This is a major impediment for vehicle-application of fuel cells. Now, scientists at Brookhaven have overcome this problem.
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Keywords: brookhaven, lab, scientists, discover, gold, clusters, stabilize, platinum, electrocatalysts, fuel, cells, scientist, cluster, electrocatalyst, cell
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- Brookhaven lab scientists stabilize platinum electrocatalysts for use in fuel cells
01-12-2007 · EurekAlert!
Platinum is the most efficient electrocatalyst for accelerating chemical reactions in fuel cells for electric vehicles. In reactions during the stop-and-go driving of an electric car, however, the platinum dissolves, which reduces its efficiency as a catalyst. This is a major impediment for vehicle-application of fuel cells.Now, scientists at the U.S. Department of Energy's Brookhaven National Laboratory have overcome this problem.
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- Giving Platinum Catalysts a Golden Boost for Fuel Cells
03-27-2007 · Brookhaven National Laboratory
Platinum might outweigh gold in the jewelry market, but as part of an ongoing effort to produce efficient and affordable fuel cells, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory are studying how gold atoms might enhance the value of the pricier metal. Specifically, they're looking for ways to use gold to prevent the destruction of platinum in the chemical reactions that take place in fuel cells.
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- A boost for hydrogen fuel cell research
01-25-2007 · EurekAlert!
The development of hydrogen fuel cells for vehicles, the ultimate green dream in transportation energy, is another step closer. Researchers with the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and Argonne National Laboratory (ANL) have identified a new variation of a familiar platinum-nickel alloy that is far and away the most active oxygen-reducing catalyst ever reported.
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- Brown scientists take the petri dish to new dimensions
09-19-2007 · EurekAlert!
Brown University biomedical engineers have created a new method for growing cells in three dimensions rather than the traditional two. This 3-D petri dish allows cells to self-assemble, creating cell clusters that can be transplanted in the body or used to test drugs in the lab. This simple new technique is part of a growing body of research that shows that 3-D culture techniques can create cells that behave more like cells in the body.
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- Learning how nature splits water
11-03-2006 · EurekAlert!
An international team led by scientists from the US Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) pieced together high-resolution (approximately 0.15 Еngstrom) structures of a Mn4Ca cluster found in a photosynthetic protein complex. Their work could help researchers synthesize molecules that mimic this catalyst, which is a central focus in the push to develop clean energy technologies that rely on sunlight to split water and form hydrogen to feed fuel cells or other non-polluting power sources.
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- Scientists discover stage at which an embryonic cell is fated to become a stem cell
01-10-2007 · EurekAlert!
Cambridge scientists have discovered the stage at which some of the cells of a fertilized mammalian egg are fated to develop into stem cells and why this occurs. The findings of the study, which overturn the long-held belief that cells are the same until the fourth cleavage (division) of the embryo, are reported in today's edition of Nature.
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- New 'biofuel cell' produces electricity from hydrogen in plain air
03-26-2007 · EurekAlert!
A pioneering "biofuel cell" that produces electricity from small amounts of hydrogen mixed in ordinary offers significant potential as an inexpensive and renewable alternative to the costly platinum-based fuel cells that have dominated discussion about the "hydrogen economy" of the future. The work will be described at the March national meeting of the American Chemical Society in Chicago.
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- Scientists discover novel way to remove iron from ferritin
11-02-2007 · EurekAlert!
A new study led by Children's Hospital Oakland Research Institute senior scientist, Elizabeth Theil, PhD, is the first to suggest that a small protein or heptapeptide could be used to accelerate the removal of iron from ferritin. The results of this study may help scientists develop new medications that dramatically improve the removal of excess iron in patients diagnosed with blood diseases such as B-Thalassemia (Cooley's anemia) or sickle cell disease.
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- Gold, Copper Nanoparticles Take Center Stage in the Search for Hydrogen Production Catalysts
03-28-2007 · Brookhaven National Laboratory
X-ray studies at Brookhaven are pointing the way to less costly and more efficient catalysts for improving the performance of fuel cells. The studies, which will be presented by Brookhaven chemist Jose Rodriguez at the 233rd National Meeting of the American Chemical Society, show that copper can be substituted for gold in reactions that keep fuel cells functioning longer while eliminating unwanted byproducts.
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- Working Toward New Energy With Electrochemistry
08-20-2007 · Brookhaven National Laboratory
In an effort to develop alternative energy sources such as fuel cells and solar fuel from "artificial" photosynthesis, scientists at the U.S. Department of Energy's Brookhaven National Laboratory are taking a detailed look at electrons - the particles that set almost all chemical processes in motion.
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