A new cathode material for all-solid-state fluoride-ion batteries (FIBs) delivers a reversible capacity of approximately 550 mAh/g. That’s more than double the 120–250 mAh/g typical of lithium-ion cathodes.
A Japanese language article in Nikkei reported that the volumetric capacity of a cathode for such fluoride-ion batteries increased by roughly three times that of lithium-ion batteries. When fully assembled into a battery, this could yield a volumetric energy density over twice that of lithium-ion batteries, potentially doubling the driving range of electric vehicles (EVs) from 600 km to 1,200 km. The Nikkei article notes that practical use is likely to arrive after 2035.
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