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| Low-grade waste heat regenerates ammonia battery Posted: 03 Dec 2014 09:53 AM PST An efficient method to harvest low-grade waste heat as electricity may be possible using reversible ammonia batteries, according to engineers. Low-grade waste heat is an artifact of many energy-generating methods. In automobiles, waste heat generated in winter is diverted to run the vehicle heating system, but in the summer, that same waste heat must be dissipated to the environment. |
| Toward a low-cost 'artificial leaf' that produces clean hydrogen fuel Posted: 03 Dec 2014 08:11 AM PST For years, scientists have been pursuing 'artificial leaf' technology, a green approach to making hydrogen fuel that copies plants' ability to convert sunlight into a form of energy they can use. Now, one team reports progress toward a stand-alone system that lends itself to large-scale, low-cost production. They created a nanowire mesh design. |
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