2,2-Difluoroethyl methyl carbonate

F2EMC (di-fluoroethyl methyl carbonate) is a cutting-edge, partially fluorinated linear carbonate solvent engineered for advanced lithium‐ion battery electrolytes. Its unique molecular structure—featuring the –CHF_₂ group—optimizes Li⁺ ion solvation while promoting rapid ion conduction and maintaining ideal viscosity and oxidative stability. Our battery grade F2EMC is produced in an anhydrous state with ultra-low residual acid content, ensuring optimal performance when incorporated into electrolyte formulations.

Our battery grade F2EMC is designed to unlock superior lithium‑ion battery performance by improving electrolyte stability and performance. Research suggests that incorporating F2EMC into battery electrolytes enhances fast-charging capability and reduces polarization by enabling efficient ion-transport. F2EMC forms a stable and uniform solid electrolyte interphase (SEI) on both graphite and silicon anode materials, lowering the cell′s charge transfer resistance. This results in extended cycle life and reliable high-voltage performance, making F2EMC an ideal choice for electric vehicles, portable electronics, and grid-scale energy storage applications.

• Low acid and trace water content: minimizes side reactions and corrosion, ensuring enhanced battery longevity.

• Partially fluorinated structure: optimizes Li^⁺ solvation and promotes efficient ion conduction for fast-charging and reliable performance.