Fluoride is a promising charge carrier for batteries due to its high charge/mass ratio and small radius. Here, we report commercial copper powder exhibits a reversible capacity of up to 222 mA h g in a saturated electrolyte of 16 KF. This electrolyte suppresses dissolution of CuF, the charged product. Furthermore, the KF solid comprised in the Cu electrode facilitates a high initial capacity. Our results showcase the potential of aqueous fluoride batteries using copper as an electrode.
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| http://dx.doi.org/10.1039/d2cc02978b | DOI Listing |
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