DFEC (Difluoroethylene Carbonate, 99.9%) as Battery Electrolyte Additive, 25 g/bottle, CBEADFEC
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DFEC (Difluoroethylene Carbonate, DFEC) is a highly effective and essential electrolyte additive, particularly for stabilizing high-capacity anodes like silicon (Si) and lithium metal (Li), which undergo massive volume changes during cycling. The main role of DFEC is to facilitate the formation of a robust, flexible, and ion-conducting Solid Electrolyte Interphase (SEI) on the anode surface, especially for materials that suffer from severe volume changes (e.g., Silicon expands up to ~300% upon lithiation).
| Part Number |
CBEADFEC (C-BEA-DFEC) |
| CAS |
171730-81-7 |
| Chemical Formula |
C3H2F2O3  |
| Appearance |
Colorless Liquid |
| Purity |
99.9% (Battery Grade) |
| Molecular Weight | 124.04 g/mol |
| Boiling Point | ~233.8 °C (lit.) |
| Package Size | 25 g/bottle |
Notes: Please store the DFEC solution in the glovebox due to its sensitivity to humidity and oxygen
References:
- H. Tu, et al. Difluoroethylene Carbonate as an Electrolyte Additive for Engineering the Electrolyte–Electrode Interphase of Lithium Metal Batteries, ACS Appl. Mater. Interfaces 2023,15, 46, 53533–53539.
- P. Gogoi, et al. Investigations on Electrolyte Additives and Formation Mechanism of the Solid Electrolyte Interphase for Sodium Ion Batteries, ACS Appl. Mater. Interfaces 2025, 17, 9, 13980–13987.