Title: High durability fuel cell components with cerium salt additives

Abstract

A fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane which comprises a polymer that comprises bound anionic functional groups, wherein the polymer electrolyte membrane additionally comprises cerium cations. In another aspect, a fuel cell membrane electrode assembly is provided comprising a polymer electrolyte membrane which comprises a polymer that comprises bound anionic functional groups, wherein at least a portion of the anionic functional groups are in acid form and at least a portion of the anionic functional groups are neutralized by cerium cations. In another aspect, a polymer electrolyte membrane is provided which comprises a polymer that comprises bound anionic functional groups, wherein the polymer electrolyte membrane additionally comprises cerium cations, and wherein the amount of cerium cations present is between 0.001 and 0.5 charge equivalents based on the molar amount of acid functional groups present in the polymer electrolyte, more typically between 0.005 and 0.2, more typically between 0.01 and 0.1, and more typically between 0.02 and 0.05.

Inventors:

Frey, Matthew H.; Pierpont, Daniel M.; Hamrock, Steven J.

Issue Date:

2014-01-14

Research Org.:

3M Innovative Properties Company

Sponsoring Org.:

USDOE

OSTI Identifier:

1531892

Patent Number(s):

8628871

Application Number:

11/262,268

Assignee:

3M Innovative Properties Company (St. Paul, MN)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

C08J2327/18 - Homopolymers or copolymers of tetrafluoroethylene
C08J5/2237 - {containing fluorine}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M2300/0091 - in the form of mixtures
H01M8/1004 - characterised by membrane-electrode assemblies [MEA]
H01M8/1023 - having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes
H01M8/1027 - having carbon, oxygen and other atoms, e.g. sulfonated polyethersulfones [S-PES]
H01M8/1032 - having sulfur, e.g. sulfonated-polyethersulfones [S-PES]
H01M8/1039 - halogenated, e.g. sulfonated polyvinylidene fluorides
H01M8/1051 - Non-ion-conducting additives, e.g. stabilisers, SiO2 or ZrO2
H01M8/1058 - characterised by a porous support having no ion-conducting properties
H01M8/1072 - by chemical reactions, e.g. in situ polymerisation or in situ crosslinking
H01M8/1081 - starting from solutions, dispersions or slurries exclusively of polymers

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/50 - Fuel cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P70/50 - Manufacturing or production processes characterised by the final manufactured product

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DOE Contract Number:  

FC36-02AL67621

Resource Type:

Patent

Resource Relation:

Patent File Date: 2005-10-28

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 30 DIRECT ENERGY CONVERSION