Semi-Interpenetrating Network Method for Dimensionally Stabilizing Highly Charged Polyelectrolyte Membranes

Patent metadata

Field	Value
Publication number	US-2016248113-A1
Application number	US-201615048206-A
Country	US
Kind code	A1
Filing date	Feb 19, 2016
Priority date	Feb 20, 2015
Publication date	Aug 25, 2016
Grant date	—

Abstract

An anion transport membrane is provided, which is based on a linear polymer electrolyte with anion-exchange groups that mechanically reinforced by a covalently cross-linked network. The linear polymer electrolyte is partially or fully miscible with the second covalently cross-linked network. In another example, an anion transport membrane is provided, which is based on a linear quaternary ammonium polysulfone membrane backbone mechanically reinforced by a chemically-crosslinked network of poly(styrene-co-divinylbenzene), whereby the reinforcing network has covalent divinylbenzene cross-links.

First claim

What is claimed is:

1 . An anion transport membrane, comprising: a linear polymer electrolyte with anion-exchange groups mechanically reinforced by a covalently cross-linked network, wherein the linear polymer electrolyte is partially or fully miscible with the covalently cross-linked network.

2 . The membrane as set forth in claim 1 , wherein the linear polymer electrolyte is an aromatic polymer

3 . The membrane as set forth in claim 2 , wherein the aromatic polymer is an poly(phenylene oxide), a polyaryletherketone, a polybenzimidazole or an aromatic polysulfone.

4 . The membrane as set forth in claim 1 , wherein the anion-exchange group is ammonium, phosphonium, imidazolium, sulfonium, ruthenium, or guanidinium.

5 . An anion transport membrane, comprising: a linear quaternary ammonium polysulfone membrane backbone mechanically reinforced by a chemically-crosslinked network of poly(styrene-co-divinylbenzene), wherein the reinforcing network contains covalent divinylbenzene cross-links.

6 . The membrane as set forth in claim 5 , wherein the linear quaternary ammonium polysulfone membrane backbone is a benzyltrimethylammonium polysulfone membrane backbone.

Assignees

• Univ Leland Stanford Junior

Inventors

• He Steve S
• Frank Curtis W
• Strickler Alaina

Classifications

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• H01M8/1032

  having sulfur, e.g. sulfonated-polyethersulfones [S-PES] · CPC title

• H01M8/1023 Primary

  having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• B01J41/14

  obtained by reactions only involving unsaturated carbon-to-carbon bonds · CPC title