BHFC {Bis(1,1,1,3,3,3-Hexafluoroisopropyl) Carbonate, >99.5%} as Battery Electrolyte Co-Solvent and Additive, 10-50 g/bottle, CBESABHFC
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Bis(1,1,1,3,3,3-hexafluoroisopropyl) carbonate (commonly designated as BHFC) is a heavily fluorinated, specialty organic carbonate engineered for advanced energy storage systems. Featuring two bulky hexafluoroisopropyl groups flanking a central carbonate core, BHFC serves as a high-purity functional co-solvent and interphase-directing additive for next-generation lithium-ion and sodium-ion batteries.
Its main functional roles in electrolyte engineering are: (1) Fluorine-Rich Interphase (SEI/CEI) Construction: Due to its high local fluorine concentration (12 fluorine atoms per molecule), BHFC readily decomposes at electrode interfaces during initial electrochemical formation. This yields an inorganic-rich, highly stable Solid Electrolyte Interphase (SEI) and Cathode Electrolyte Interphase (CEI) enriched with metal fluorides (LiF / NaF), protecting the electrodes from continuous degradation. (2) Suppression of Parasitic Side Reactions: High-purity, battery-grade BHFC is manufactured with rigorously controlled, ultra-low acid and trace water content (< 100 ppm HF equivalent). This prevents moisture-induced salt hydrolysis and minimizes acid-catalyzed transition metal dissolution from high-voltage oxide cathodes. (3) Thermal Stability & Safety Profile: The dense perfluoroalkyl structure increases resistance to thermal runaway, curbing exothermic reactions within the bulk electrolyte during high-temperature or abusive operational conditions.
| Part Number |
CBESABHFC (C-BESA-BHFC) |
| CAS |
18925-66-1 |
| Chemical Formula |
C7H2F12O3  |
| Appearance |
Colorless Liquid |
| Purity |
>99.5% (Battery Grade) |
| Molecular Weight | 362.07 g/mol |
| Package Size | 10 g, 25 g, and 50 g/bottle |
Notes: Please store the BHFC in the glovebox due to its sensitivity to humidity and oxygen.
References:
- S. Chen, et al. High-Efficiency Lithium Metal Anode Enabled by a Concentrated/Fluorinated Ester Electrolyte, ACS Appl. Mater. Interfaces (2020) 12 (24): 27794–27802.
- X. Zheng, et al. Exploring high-voltage fluorinated carbonate electrolytes for LiNi0.5Mn1.5O4 cathode in Li-ion batteries, Journal of Energy Chemistry, 2020, 42, 62-70