28 May '14, 6pm

"New Battery Tech Could Turn Waste Heat to Electricity" @IEEESpectrum

Every year, Lawrence Livermore National Laboratory in California publishes an amazing chart cataloguing all the energy used in the United States. The striking thing about it is the "rejected energy" portion of the chart: in 2013, more than 60 percent of our 97.4 quads (around 293 billion kilowatt-hours) of energy were rejected, or wasted. Most of that dissipates as heat: from smokestacks and manufacturing processes, and from your tailpipe. Capturing some of that heat has long been a dream that would improve our efficiency and reduce energy use and emissions, and new research takes a novel approach to achieve it. Most waste heat ideas involve the thermoelectric effect, where a voltage is created based on a temperature difference. This approach has been limited by materials and the need for very high temperatures and gradients, but the new idea, using the thermogalvanic effe...

Full article: http://spectrum.ieee.org/energywise/green-tech/fuel-cells...

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New Battery Tech Could Turn Waste Heat to Electricity #batterynews

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