Polymeric materials for electrochemical cells and ion separation processes

Patent metadata

Field	Value
Publication number	US-11318455-B2
Application number	US-202016898052-A
Country	US
Kind code	B2
Filing date	Jun 10, 2020
Priority date	Apr 3, 2015
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Polymers of intrinsic microporosity are provided herein. Disclosed polymers of intrinsic microporosity include modified polymers of intrinsic microporosity that include negatively charged sites or crosslinking between monomer units. Systems making use of polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also described, such as electrochemical cells and ion separation systems. Methods for making and using polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also disclosed.

First claim

What is claimed is:

1. A battery comprising at least one electrochemical cell, wherein the electrochemical cell comprises:
an anode;
an electrolyte;
a cathode; and
a separator disposed between the anode and cathode, wherein the separator comprises a polymer of intrinsic microporosity.

2. The battery of claim 1 , wherein the electrolyte comprises an organic solvent.

3. The battery of claim 1 , wherein the polymer of intrinsic microporosity comprises a plurality of micropores, wherein the micropores have a cross-sectional dimension between 0.5 nm and 2 nm.

4. The battery of claim 1 , wherein the polymer of intrinsic microporosity comprises a plurality of repeat units, wherein at least one of the repeat units includes one or more electrostatic charges.

5. The battery of claim 1 , wherein the polymer of intrinsic microporosity comprises a plurality of repeat units, wherein at least one of the repeat units includes one or more negative charges.

6. The battery of claim 1 , wherein the polymer of intrinsic microporosity is crosslinked.

7. The battery of claim 1 , wherein the separator further comprises a support membrane in contact with the polymer of intrinsic microporosity.

8. The battery of claim 7 , wherein the support membrane comprises a polymer selected from the group consisting of: polyethylene, polyethylene copolymers, polypropylene, polypropylene copolymers, polyacrylonitrile, polyacrylonitrile copolymers, poly(vinylidene fluoride), poly(tetrafluoroethylene), poly(vinyl chloride), poly(vinylchloride) copolymers, poly(hexafluoropropylene), poly(hexafluoropropylene) copolymers, polyaramide, any combination thereof, and any copolymers thereof.

Assignees

• Univ California

Inventors

• Helms Brett A
• Li Changyi
• Ward Ashleigh
• Doris Sean E
• Frischmann Peter D

Classifications

• B01D2325/0283

  Pore size · CPC title

• B01D71/82

  characterised by the presence of specified groups, e.g. introduced by chemical after-treatment · CPC title

• B01D69/02 Primary

  characterised by their properties · CPC title

• C08J5/2256

  based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation · CPC title

• C07D491/22

  in which the condensed system contains four or more hetero rings · CPC title