According to a new research report, by overcoming the current temperature limitations of the fluoride battery (FIB) technology, the researchers demonstrated that the operation based on the fluoride-ion energy battery at room temperature can meet the high energy density required by our rapid growth of energy storage. The research and development of batteries has opened a new path. FIBs provide an attractive option for other types of potentially high-energy battery electrochemistry (such as lithium-ion or nickel-ion based electrochemical reactions, which are usually limited by the inherent characteristics of their electrolytes).
Since the atomic weight of fluorine is very light, rechargeable batteries based on elemental fluorine can provide very high energy density. However, although FIBs are regarded as strong competitors for "next generation" high-density energy storage devices, they are limited by their required temperature requirements.
Previously, the repeated use of this battery technology required operating at high temperatures (above 150 degrees Celsius) to utilize molten salt electrolytes. And Victoria Davis and colleagues reported a method to create a fluoride-ion electrochemical cell that can operate at room temperature, making it possible to chemically stabilize a liquid conductive fluoride electrolyte, which has high ionic conductivity and a wide range of Voltage operating range. Davis et al. Developed this electrolyte using a dry tetraalkylammonium fluoride salt dissolved in a certain fluorinated ether organic solvent. When paired with a core-shell nanostructured composite cathode containing copper, lanthanum and fluorine, the researchers demonstrated its reversible chemical cycle at room temperature.
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