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March 18th, 2010
Packing More into Lithium Batteries
Abstract:
Researchers at Stanford University have developed an electrode that can be used to make more energy-dense lithium-sulfur batteries. If issues surrounding life-cycle deterioration can be addressed, the battery could resolve performance and safety issues limiting the spread of longer-lasting batteries in hybrid and electric vehicles.
In 2007, researchers at Stanford University, led by materials science professor Yi Cui, devised an electrode made of silicon nanowires that could hold 10 times as much charge as conventional lithium-ion batteries. But for the device to realize its full potential, battery developers sought a corresponding cathode that could store electrons in similarly high densities.
Now the same Stanford team thinks they have found their answer: a proof-of-concept lithium-sulfide cathode with 10 times the power density of conventional lithium-ion cathodes.
Source:
technologyreview.com
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