US 2013/0253157 A1 · IONOMERS AND IONICALLY CONDUCTIVE COMPOSITIONS FOR USE AS ONE OR MORE ELECTRODE OF A FUEL CELL

Abstract

This invention relates to solid polymer electrolyte materials for use in one or more electrode of a fuel cell. The solid polymer electrolyte materials comprise one or more ionomer which comprises polymerized units of monomers A and monomers B, wherein monomers A are perfluoro dioxole or perfluoro dioxolane monomers, and the monomers B are functionalized perfluoro olefins having fluoroalkyl sulfonyl, fluoroalkyl sulfonate or fluoroalkyl sulfonic acid pendant groups, CF2═CF(O)[CF2]nSO2X.

Claims19

Dependent claims

A solid polymer electrolyte material for use in an electrode of a fuel cell comprising one or more ionomer which comprises:

(a) polymerized units of one or more fluoromonomer A1 or A2;
and
(b) polymerized units of one or more fluoromonomer (B):
CF2═CF—O—[CF2]n—SO2X (B)
wherein n=2, 3, 4 or 5 and X=F, CI, OH or OM, and wherein M is a monovalent cation;
and wherein the ionomer has a through plane proton conductivity, at 80° C. and 95% relative humidity, greater than 70 mS/cm, and an oxygen permeability at 23° C. and 0% relative humidity greater than 1×10−9 scc cm/(cm2 s cmHg).

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/991,266Filed 20 Dec 2011

Published

26 Sep 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H01M 8/1039
Polymeric electrolyte materials: halogenated, e.g. sulfonated polyvinylidene fluorides
H01M 4/8668
Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers: binders
H01M 8/1023
Characterised by the chemical structure of the main chain of the ion-conducting polymer: having only carbon, e.g. polyarylenes, polystyrenes or…
H01M 8/1058
Polymeric electrolyte materials: characterised by a porous support having no ion-conducting properties

Ionomers and ionically conductive compositions for use as one or more electrode of a fuel cell

Life of this patent

Ionomers and ionically conductive compositions for use as one or more electrode of a fuel cell

Life of this patent

Abstract

Claims19