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A sliver of wood coated with tin could make a tiny, long-lasting, efficient and environmentally friendly battery […]. The components in the battery tested by scientists at the University of Maryland are a thousand times thinner than a piece of paper. Using sodium instead of lithium, as many rechargeable batteries do, makes the battery environmentally benign. […]. Its low cost and common materials would make it ideal to store huge amounts of energy at once, such as solar energy at a power plant…

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> University of Maryland : http://bit.ly/17CSl1i

> Maryland Nanocenter : http://bit.ly/11O1bRZ