Fluorinated Esters

Halocarbon fluorinated esters provide unique benefits not available in conventional non-fluorinated esters:
• performance over a wider temperature range (enabling lower temperature performance)
• improved capacity retention
• enhanced oxidative stability, allowing use at high voltage ranges (4.2V-5.0V)
• some fluorinated esters can reduce flammability
• improved solubility with certain lithium salts (eg. LiBOB)

Representative Data:

Test Conditions:  Cell Type – Pouch Cell,  Cycling (@ 45 oC) – 4.35V to 3.00V,  Cathode – NMC 622,  Anode – Graphite.  Control Cell– LiPF6 (1.15M in proprietary electrolyte solvent).   Test Cells – LiPF6 (1.15M) + 10% Halocarbon additives in proprietary solvent

Representative Products:

– Molecular Weight: 142
– Boiling Point: 61°C
– Density: 1.19 g/cm3
– Appearance: Clear colorless liquid

– Molecular Weight: 142
– Boiling Point: 78°C
– Density: 1.26 g/cm3
– Appearance: Clear colorless liquid

– Molecular Weight: 128
– Boiling Point: 44°C
– Density: 1.27 g/cm3
– Appearance: Clear colorless liquid

– Molecular Weight: 196
– Boiling Point: 55°C
– Density: 1.46 g/cm3
– Appearance: Clear colorless liquid

– Molecular Weight: 210
– Boiling Point: 72°C
– Density: 1.29 g/cm3
– Appearance: Clear colorless liquid

Fluorinated Esters