Scientists baked a leaf to demonstrate a battery. Credit: Image courtesy of Maryland NanoCenter
Scientists have a new recipe for batteries: Bake a leaf, add sodium. They used a carbonized oak leaf, pumped full of sodium, as a demonstration battery’s anode. Other studies have shown that melon skin, banana peels and peat moss can be used in this way, but a leaf needs less preparation. The scientists are trying to make a battery using sodium where most rechargeable batteries sold today use lithium. Sodium would hold more charge, but can’t handle as many charge-and-discharge cycles as Li can.
One of the roadblocks has been finding an anode material that is compatible with sodium, which is slightly larger than lithium...
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