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Ion conducting polymers and polymer blends for alkali metal ion batteries

United States Patent

9,748,604
August 29, 2017
View the Complete Patent at the US Patent & Trademark Office
Electrolyte compositions for batteries such as lithium ion and lithium air batteries are described. In some embodiments the compositions are liquid compositions comprising (a) a homogeneous solvent system, said solvent system comprising a perfluropolyether (PFPE) and polyethylene oxide (PEO); and (b) an alkali metal salt dissolved in said solvent system. In other embodiments the compositions are solid electrolyte compositions comprising: (a) a solid polymer, said polymer comprising a crosslinked product of a crosslinkable perfluropolyether (PFPE) and a crosslinkable polyethylene oxide (PEO); and (b) an alkali metal ion salt dissolved in said polymer. Batteries containing such compositions as electrolytes are also described.
DeSimone; Joseph M. (Los Gatos, CA), Pandya; Ashish (Morrisville, NC), Wong; Dominica (Carrboro, NC), Vitale; Alessandra (Turin, IT)
The University of North Carolina at Chapel Hill (Chapel Hill, NC)
14/ 436,603
20150288028
October 17, 2013
GOVERNMENT SUPPORT This invention was made with government support under Grant No. DE-SC0001011 from the Department of Energy. The US Government has certain rights to this invention.