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Storing solar energy as hydrogen using rust and water

from Science 2.0

Nov. 14, 2012: One big knock on solar energy is that it is inconsistent; it doesn't work at night or on cloudy days and storing it in batteries takes away the cost effectiveness. But a new technology is in development that can transform that light energy into a storable clean fuel that still has a neutral carbon footprint — hydrogen. What does it take? Water and iron oxide, better known as rust. Kevin Sivula and colleagues at Ecole Polytechnique Fédérale de Lausanne intentionally stuck to inexpensive materials and easily scalable production processes in order work toward an economically viable method for solar hydrogen production. more


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