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Combining Fluoroacetonitrile (FAN) With Lithium Bis(Fluorosulfonyl)Imide Salt To Enable Ultrafast Lithium-Ion Conduction
A novel ligand-channel mechanism is introduced, where the small-sized fluoroacetonitrile (FAN) solvent forms dual solvation sheaths around Li+ ions, resulting in fast Li+ transport channels and stable SEI.
ULTRAHIGH IONIC CONDUCTIVITY
LOW TEMPERATURE PERFORMANCE
FAST CHARGING CAPABILITY
REPRESENTATIVE PERFORMANCE:
At −80°C, a pouch cell delivered reversible capacities at 51% of its room-temperature capacity
In high-rate charging tests (6C), the FAN-based electrolyte outperformed traditional electrolytes with a capacity retention of 80% over 3,000 cycles
Source: Nature, 2024, 627(8002): 101-107 (https://www.nature.com/articles/s41586-024-07045-4)
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