99% Fluoroethylene carbonate CAS 114435-02-8 FEC

Certificate of Analysis-COA 

 Applications 

1. Silicon And Si/C Anodes: forms a LiF-rich interphase that holds the electrode together as silicon particles expand and contract, and published work places the working range for this additive between roughly 3 and 10 wt%.

2. Lithium Metal Anodes: decomposes ahead of the bulk solvent to build a LiF-based interphase that stabilizes lithium plating, which is why it appears in lithium metal and anode-free cell studies.

3. High Voltage And Nickel Rich Cathodes: keeps the electrolyte stable against oxidation on the cathode side, and a published dual salt study reports 81.5% retention after 300 cycles with a nickel rich cathode.

4. Sodium Ion Cells: the same interphase chemistry works at the sodium anode, where this additive builds the SEI that carbonate solvents alone do not form well enough.

5. Low Temperature Packs: improves low temperature behaviour of the electrolyte so packs keep more capacity when discharged in freezing conditions.

6. Gel Polymer And Quasi Solid Systems: acts as the film forming component that lets gel polymer electrolytes hold a stable interphase against the lithium anode.

7. Ether And Glyme Electrolytes: works as an additive or co-solvent in ether based electrolytes used for lithium ion and lithium metal cells, where carbonate solvents are not the base system.

8.  Cell Formation Step: dosed into the electrolyte before formation cycling so the interphase is built during the first charge instead of during later operation.

 Production Line

We operate 10+ production lines, backed by a well-stocked raw material warehouse.

Our workshop is equipped with automated machinery — ensuring high consistency and precision on every order, from trial samples to full container loads.

Every order follows a standardized workflow. Key quality control points are set at every stage.

 Factory Area

Standardized Process Flow

Production Capacity

Located in Shandong, our factory is approximately 300km from Qingdao Port, enabling fast and cost-effective delivery to customers worldwide.