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US 10,950,891 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.
Claims22
A polymer, comprising:
- a first diester-based polymer having a structure:
- wherein:
- each Z and Z1 is selected independently from the group consisting of —F, —CF3, and —CF2CF3;
- each X is selected independently from the group consisting of —F and —CF3;
- a is an integer that ranges from 1 to 2;
- c and d are each integers that range independently from 1 to 10;
- and
- n is an integer that ranges from 1 to 1000.
5 more elements
Dependencies are inferred from the claim text.