Sulfonyl-Based Electrolyte Solvents, Electrolytes Made Therewith, and Electrochemical Devices Made Using Such Electrolytes
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United States of America Patent
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Jan 11, 2024
app pub date -
May 25, 2021
filing date -
Sep 11, 2020
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Abstract
Sulfonyl-based solvent systems for electrolytes used in electro-chemical devices, such as secondary batteries. In some embodiments, a solvent system of the disclosure includes a sulfonyl (—SO2—)-based solvent optionally in combination with one or more different sulfonyl-based solvents and/or one or more non-sulfonyl-based solvents. Five example chemical structures for a sulfonyl-based solvent usable in a sulfonyl-based solvent system of this disclosure are disclosed. Also disclosed are electrolytes that include one or more salts, such as one or more alkali-metal salts, dissolved in a sulfonyl-based solvent system of the present disclosure. Proper formulation of a disclosed electrolyte can lead to one or more benefits, including but not limited to, improved cycle life, improved low-temperature operation, and reduced flammability.
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