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August 27th, 2009
Sion Power makes lithium-sulfur batteries that it claims can store up to 350 watt-hours per kilogram, said Linda Nazar, University of Waterloo in Ontario, Canada.
But she and researchers at University of Waterloo have been researching lithium-sulfur battery technology using nanomaterials that could deliver 550 to 650 watt-hours per kilogram, she said. Lithium-sulfur batteries, though, do have a huge drawback: they tend to operate at high temperatures.
Some key problems include finding the right catalysts to reverse the chemical reaction at low enough energy levels, as well as advances in nanotechnology to distribute that catalyst close enough to the metals.
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