Hexafluoroisopropyl methyl ether

Hexafluoroisopropyl methyl ether (HFPM) is a fluorinated ether, also called isoflurothyl in biomedical applications as a general anesthetic. HFPM is a colorless, non-flammable liquid used in the battery industry as a high-performing cosolvent and additive for electrolyte formulations in lithium-ion batteries. HFPM has a low viscosity and a low boiling point and is miscible with many polar organic solvents, which lend it use as a diluent for low-temperature applications. Our battery-grade HFPM is an important component in the production of safe and efficient lithium-ion batteries for use in a wide range of applications.

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Battery-grade hexafluoroisopropyl methyl ether (HFPM) is a versatile and highly effective cosolvent and electrolyte additive for use in lithium-ion batteries (LiBs) and sodium-ion batteries (SIBs). With its low viscosity, low boiling point, and compatibility with a variety of battery solvents, HFPM is an ideal diluent for low-temperature applications and can help to improve the wettability of polypropylene separators.[1] Additionally, HFPM′s nonflammability is a major benefit for battery safety. HFPM also has good compatibility with most electrode materials including for example, lithium metal, graphite, NMCs, and LMO.[1][2] Studies have shown that in SIBs adding HFPM as an electrolyte additive can help to stabilize the Na electrode surface and form a new fluorine-containing organic layer, resulting in a more stable solid electrolyte interphase.[3] Overall, battery-grade HFPM is a crucial component in the production of high-performing, reliable, and safe lithium-ion batteries for a wide range of applications, from consumer electronics to electric vehicles.