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US 10,950,890 B2Granted
Diester-based polymer electrolytes for high voltage lithium ion batteries
AssigneeRobert Bosch GmbH
InventorsMalar Azagarsamy, Hany Basam Eitouni, Kulandaivelu Sivanandan
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Abstract
New homopolymers and copolymers of diester-based polymers have been synthesized. When these polymers are combined with electrolyte salts, such polymer electrolytes have shown excellent electrochemical oxidation stability in lithium battery cells. Their stability along with their excellent ionic conductivities make them especially suitable as electrolytes in high energy density lithium battery cells.
Claims20
A copolymer, comprising:
- a first polymer comprising a diester-based polymer comprising:
- wherein b is an integer that ranges from 4 to 6;
- and
- n is an integer that ranges from 1 to 1000;
- and
- a second polymer selected from the group consisting of polystyrene, hydrogenated polystyrene, polymethacrylate, poly(methyl methacrylate), polyvinylpyridine, polyvinylcyclohexane, polyimide, polyamide, polypropylene, polyolefins, poly(t-butyl vinyl ether), poly(cyclohexyl methacrylate), poly(cyclohexyl vinyl ether), poly(t-butyl vinyl ether), polyethylene, poly(phenylene oxide), poly(2,6-dimethyl-1,4-phenylene oxide), poly(phenylene sulfide), poly(phenylene sulfide sulfone), poly(phenylene sulfide ketone), poly(phenylene sulfide amide), polysulfone, polyvinylidene fluoride, and combinations thereof.
3 more elements
Dependencies are inferred from the claim text.