A Safer, Wide-Temperature Liquefied Gas Electrolyte Based on Difluoromethane

Development of safe electrolytes that are compatible with both lithium metal anodes and high-voltage cathodes can operate in a wide-temperature range is formidable, yet important challenge. Recently, new class based on liquefied gas solvents has shown promise addressing this issue. Concerns, however, have been raised the pressure, flammability low maximum operating temperature these systems. Here, we endeavor to mitigate safety practicality concerns by demonstrating an enhanced feature inherent showing viability using difluoromethane as solvent which lower flammability, improved operation characteristics compared fluoromethane. We create custom-built setup enable electrolyte characterization through Raman spectroscopy supplement molecular dynamics (MD) simulations. The shows good conductivity wide compatibility anode 4 V cathodes. demonstrated use such alternative opens path towards further development high-energy batteries range.