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Electric current-producing device having sulfone-based electrolyte

United States Patent

November 16, 2010
View the Complete Patent at the US Patent & Trademark Office
Electrolytic solvents and applications of such solvents including electric current-producing devices. For example, a solvent can include a sulfone compound of R1--SO2--R2, with R1 being an alkyl group and R2 a partially oxygenated alkyl group, to exhibit high chemical and thermal stability and high oxidation resistance. For another example, a battery can include, between an anode and a cathode, an electrolyte which includes ionic electrolyte salts and a non-aqueous electrolyte solvent which includes a non-symmetrical, non-cyclic sulfone. The sulfone has a formula of R1--SO2--R2, wherein R1 is a linear or branched alkyl or partially or fully fluorinated linear or branched alkyl group having 1 to 7 carbon atoms, and R2 is a linear or branched or partially or fully fluorinated linear or branched oxygen containing alkyl group having 1 to 7 carbon atoms. The electrolyte can include an electrolyte co-solvent and an electrolyte additive for protective layer formation.
Angell; Charles Austen (Mesa, AZ), Sun; Xiao-Guang (Tempe, AZ)
Arizona Board of Regents for and behalf of Arizona State University (Scottsdale, AZ)
11/ 780,416
July 19, 2007
STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH OR DEVELOPMENT The U.S. Government has a paid-up license in the present invention and the right in limited circumstances to require the patent owner to license others on fair and reasonable terms as provided by the terms of Grant No. DEFG039ER14378-003 and DEFG03945541 awarded by the U.S. Department of Energy.