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US 2026/0290893 A1Published application
Solid polymer electrolytes with increased polymer polarizability for solid-state lithium batteries
AssigneeFord Global Technologies, LLC
InventorsZijie Lu, Xiaojiang Wang, Andrew Robert Drews, Venkataramani Anandan
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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.
Claims15
An electrolyte composition comprising:
- a reinforcing substrate;
- a polymer supported by the reinforcing substrate, the polymer having ethylene oxide portions and hydrocarbon portions having carbonic acid groups, the ethylene oxide portions to hydrocarbon portions having a mass ratio from about 0.5:1 to 5:1;
- a plasticizer distributed within the polymer;
- and
- lithium ions from a small molecule lithium salt distributed within the polymer and plasticizer;
- wherein the electrolyte composition is configured to have an ionic conductivity of at least 10-3 mS/cm at 25° C.
3 more elements
An electrochemical cell comprising:
- an anode;
- a cathode;
- and
- a solid polymer electrolyte between the anode and cathode, the solid polymer electrolyte having a polymer supported by a substrate, a plasticizer dispersed within the polymer and a lithium ion sourced from a small molecule lithium salt, the polymer having poly(ethylene glycol) diacrylate based portions and vinylene carbonate based portions.
1 more element
Dependencies are inferred from the claim text.