At Germany’s Karlsruhe Institute of Technology (KIT), researchers have developed a new concept for rechargeable batteries. Based on a fluoride shuttle – the transfer of fluoride anions between the electrodes – it promises to enhance the storage capacity reached by lithium-ion batteries by several factors. Operational safety is also increased, as it can be done without lithium. The fluoride-ion battery is presented for the first time in a paper in the Journal of Materials Chemistry by Dr. Maximilian Fichtner, Head of the Energy Storage Systems Group, and Dr. Munnangi Anji Reddy. “In search of new concepts to build batteries with high energy densities, electrochemical cells based on metal fluorides may be promising. Herein, we report the demonstration of secondary battery cells based on fluoride shuttle. In fluoride ion batteries, [a] fluoride anion (negatively-charged ions moving toward the positive electrode) acts as charge transfer ion between a metal/metal fluoride pair where it will react with metal or evolve from metal fluoride depending on the flow of current.” Presenting on day two of the …
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