From ESS News
A research team led by Nankai University and the Shanghai Institute of Space Power-Sources has reported a hydrofluorocarbon (HFC) electrolyte that enabled lithium-metal pouch batteries with energy density above 700 Wh/kg while maintaining operation at temperatures down to -70 C.
The findings were published in Nature on Feb. 25 in a paper titled “Hydrofluorocarbon electrolytes for energy-dense and low-temperature batteries.”
The advance centers on electrolyte chemistry. The researchers moved away from conventional oxygen-coordinated carbonate systems and instead developed a fluorine-coordinated electrolyte based on monofluorinated alkane solvents. Using 1,3-difluoropropane (DFP) as a core solvent, they achieved lithium salt dissolution above 2 mol/L, challenging assumptions about the solubility limits of fluorinated hydrocarbons.
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