Innovation in batteries – Zinc-air

Power Air, a startup from Livermore, CA, is designing zinc oxide fuel cells. In their fuel cells, zinc is dissolved in an electrolyte solution, and exposure to the air causes zinc oxide to form, releasing electrons and generating electricity. In theory, the zinc oxide can be collected, reduced back to zinc metal and fed back into the cycle. Zinc air batteries are already used in hearing aids, though companies like Power Air hope to build batteries more suited for power and charging mobile electronic devices.

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