Description

Description

4-Fluoro-1,3-dioxolan-2-one (Fluoroethylene Carbonate) is a high-purity, fluorinated cyclic carbonate ester with the molecular formula C₃H₃FO₃ (CAS No. 114435-02-8). This specialized organic compound is widely utilized as a key electrolyte additive in advanced lithium-ion battery systems, where it enhances electrode stability and cycling performance. The presence of a fluorine substituent on the carbonate ring structure imparts unique electrochemical properties, including improved SEI (Solid Electrolyte Interphase) formation on anode surfaces. Our product is synthesized under stringent quality control measures to ensure ??99% purity (GC), with low levels of moisture and impurities that could compromise battery performance. Available in research quantities or bulk orders, this compound is supplied in sealed, moisture-resistant packaging under inert atmosphere to maintain stability.

Key specifications include: Molecular Weight: 106.05 g/mol, Density: ~1.45 g/cm³, Melting Point: 18-22??C, Boiling Point: 230-235??C. Safety data includes GHS classifications for skin and eye irritation (Category 2).

Application

4-Fluoro-1,3-dioxolan-2-one serves as a critical performance-enhancing additive (typically 2-10% by weight) in lithium-ion battery electrolytes, where it preferentially decomposes to form a stable, fluorine-rich SEI layer on graphite anodes. This additive significantly improves battery cycle life, especially at high voltages or elevated temperatures, by suppressing electrolyte decomposition and gas generation. Recent research indicates particular benefits in silicon-containing anode systems where conventional carbonate electrolytes show poor stability. The compound also finds emerging applications in next-generation battery chemistries including lithium metal and sodium-ion systems.

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