EHFPC {Ethyl Hexafluoroisopropyl Carbonate, >99.5%} as Battery Electrolyte Co-Solvent and Additive, 10-50 g/bottle, CBESAEHFPC
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Ethyl hexafluoroisopropyl carbonate (commonly designated as EHFPC or ethyl 1,1,1,3,3,3-hexafluoro-2-propyl carbonate) is an asymmetric fluorinated organic carbonate that bridges standard linear alkyl carbonates with heavily fluorinated structures. By pairing a traditional ethyl group with a bulky, electron-withdrawing hexafluoroisopropyl moiety, EHFPC functions as an advanced co-solvent and functional interphase-directing additive for high-voltage and high-safety lithium-ion and sodium-ion systems.
Its main functional roles in electrolyte engineering are: (1) Passivation & Interphase Engineering (SEI/CEI): Due to its lowered reduction potential, EHFPC undergoes preferential reductive decomposition during initial electrochemical formation. This pathway promotes the precipitation of a stable, inorganic-rich Solid Electrolyte Interphase (SEI) containing metal fluorides (LiF / NaF) that suppress continuous electrolyte consumption. (2) Oxidative Stability for High-Voltage Cathodes: The electron-withdrawing nature of the hexafluoroisopropyl chain deactivates the central carbonyl group against electrophilic attack and premature oxidation, raising the anodic stability ceiling for cells operating above 4.3 V–4.5 V. (3) Flammability Mitigation: The incorporation of dense fluorine fractions reduces the overall heat release rate and helps elevate the thermal abuse threshold of the bulk liquid electrolyte.
| Part Number |
CBESAEHFPC (C-BESA-EHFPC) |
| CAS |
18925-64-9 |
| Chemical Formula |
C6H6F6O3  |
| Appearance |
Colorless Liquid |
| Purity |
>99.5% (Battery Grade) |
| Molecular Weight | 240.1 g/mol |
| Package Size | 10 g, 25 g, and 50 g/bottle |
Notes: Please store the EHFPC in the glovebox due to its sensitivity to humidity and oxygen.
References:
- T. L. Kulova, et al. A critical review of electrode materials and electrolytes for Low- Temperature Lithium-Ion Batteries, International Journal of Electrochemical Science, 2020, 15, 8638-8661
- F. Li, et al. Additive-Assisted Hydrophobic Li+-Solvated Structure for Stabilizing Dual Electrode Electrolyte Interphases through Suppressing LiPF6 Hydrolysis, Angew Chem Int Ed, 2022, 61, e202205091