Back to results
US 12,633,568 B2Granted
Solid polymer electrolyte including polymer having ethylene oxide portions and carbonate based portions supported by substrate, and method of preparing the same
AssigneeFord Global Technologies, LLC
InventorsZijie Lu, Xiaojiang Wang, Andrew Robert Drews, Venkataramani Anandan
Life of this patent
Estimating the term…
Abstract
A solid polymer electrolyte having a reinforcing substrate, a polymer having ethylene oxide portions and hydrocarbon portions with pendent functional groups having high relative permittivity for an electrochemical cell is provided. The solid polymer electrolyte may provide good ionic conductivity at room temperature and good mechanical strength.
Claims19
A method of preparing an electrolyte composition comprising:
- mixing an ethylene oxide monomer having a molecular weight of 500 to 800 g/mol in an amount of 10 to 55% by weight of the composition and alkene monomer containing pendent functional groups having a relative permittivity of greater than 72 in an amount of 1 to 40% by weight of the composition to form a first solution;
- mixing a plasticizer, a lithium salt having an anion size having a widest diameter of less than 5 nm, and a photoinitiator to form a second solution;
- mixing the first and second solutions to form a final solution;
- applying the final solution to a substrate;
- and
- exposing the final solution to light irradiation to form a solid polymer electrolyte having an ionic conductivity of greater than 10−3 mS/cm at 70° C. and greater than 10−4 mS/cm at 25° C.
3 more elements
A method of preparing an electrolyte composition comprising:
- mixing an ethylene oxide monomer in an amount of 10 to 55% by weight of the composition and alkene monomer containing pendent functional groups having a relative permittivity of greater than 72 in an amount of 1 to 40% by weight of the composition to form a first solution;
- mixing a plasticizer, a lithium salt having an anion size having a widest diameter of less than 5 nm, and a photoinitiator to form a second solution;
- mixing the first and second solutions to form a final solution;
- applying the final solution to a fibrous substrate having a thickness of less than 150 μm;
- and
- exposing the final solution to light irradiation to form a solid polymer electrolyte having an ionic conductivity of greater than 10−3 mS/cm at 70° C. and greater than 10−4 mS/cm at 25° C.
3 more elements
Dependencies are inferred from the claim text.