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US 10,122,001 B2Granted
Polymerized ionic liquid block copolymers as battery membranes
AssigneesDrexel University, The Trustees of the University of Pennsylvania
InventorsYossef A. Elabd, Karen I. Winey, Yuesheng Ye, Jae-Hong Choi, Tsen-Shan Sharon Sharick
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Abstract
The present invention is directed to lithium ion transport media for use in separators in lithium ion batteries, and the membranes, separators, and devices derived therefrom.
Claims24
A lithium ion transport medium comprising a block copolymer comprising a first and second block, wherein
- (a) the first block comprises a polymerized styrene or vinylpyridine derivative;
- and
- (b) the second block comprises:
- (i) a polymerized ionic liquid comprising a tethered ionic liquid cation and a mobile anion;
- and
- (ii) a lithium ion salt of said mobile anion;
- wherein the cation of the polymerized ionic liquid is tethered to the polymer backbone by a carboalkoxy, carboxylato, carboxyamino, or ether linkage;
- and wherein said block copolymer exhibits at least one region of nanophase separation.
5 more elements
Dependencies are inferred from the claim text.