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Flouride Ion Batteries Could Be Ten Times Better and Cheaper Than Lithium Ion

Researchers at Caltech, the Jet Propulsion Laboratory, the Honda Research Institute, and Lawrence Berkeley National Laboratory and others are working together to develop rechargeable batteries based on fluoride, the anion (negatively charged form) of elemental fluorine. Fluoride batteries can have a higher energy density, which means that they may last longer—up to eight times longer than batteries in use today. But fluoride is corrosive and reactive. Iron fluorides already have more than double the lithium capacity of traditional cobalt- or nickel-based cathodes. Iron is 300 times less expensive than cobalt and 150 times less costly than nickel. Researcher team made
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