3m Innovative Properties Company

Other

Minnesota Mining and Manufacturing Company

The Penn State Research Foundation

Alliance for Sustainable Energy, LLC

Trustees of the Colorado School of Mines

Michael Andrew Yandrasits

Steven Joseph Hamrock

Naiyong Jing

Daniel M Pierpont

Miguel Antonio Guerra

Carl A Laskowski

David Allen Wald

Matthew J Lindell

Klaus Hintzer

Donald George Peterson

Timothy M Gillard

Gene H Shipman

Eric J Iverson

Harold Todd Freemyer

Paul Michael Boucher

Robert M Floyd

Stephan J Obradovich

David G S Walton

Samantha D Smith

Richard M Flynn

Rudolf J Dams

Chetan P Jariwala

Kai Helmut Lochhaas

Andrew J L Steinbach

Werner M Grootaert

David Adrian Ylitalo

Bradford B Wright

Arne Thaler

Eric Joseph Hanson

Andrew T Haug

Jimmy Minh Le

Michael Tyler Hicks

Marina M Kaplun

Fidelis C Onwumere

James D Eggleston

Douglas Willard Kado

Moses Mekala David

George G I Moore

Matthew H Frey

Tatsuo Fukushi

Mark Kevitt Debe

Gregg D Dahlke

Denis Duchesne

Krzysztof A Lewinski

Kazuhiko Mizuno

Gregory M Haugen

Thomas Herdtle

Sean M Smith

Lisa P Chen

Dirk M Coppens

Ryan C Shirk

Edward M Fischer

Jay F Schulz

Jinsheng Zhou

Hamid R Mortazavi

Linda Mae Rivard

Andrew Michael Herring

Ji-Hwa Lee

David Scott Seitz

Michael A Hickner

Mark Albert Schonewill

Kim B Saulsbury

Zbyslaw R Owczarczyk

Katherine A S Graham

Charles D Huber

Fuxia Sun

John E Abulu

Tyler S Matthews

Liang Zhu

Eric H Fort

Niccolo V Aieta

James L Horan

Youngdon Yi

Eric F Funkenbusch

Matthew J Quast

David A Ylitalo

H Todd Freemyer

Kai H Lochhaas

Doug W Kado

A fluoropolymer is described comprising pendent groups having the formula: —(CF)—(OCF)—(OCF)—SO—[NX—SO(CF)—SO]—NX—SO—Rf wherein Rf is a perfluoroether and Xand Xare independently cationic counterions. Also described are various articles including catalyst ink, polymer electrolyte membranes, and membrane electrode assemblies comprising the fluoropolymer described herein; as well as a method of making a fluoropolymer.

Fluoropolymer comprising pendent groups with ionic bis(sulfonyl)imide moiety and perfluoroether terminal group

Presently described is a monomer having the formula: wherein Also described is a method of making such monomer, various compounds prepared during while making the monomer, fluoropolymers comprising polymerized units of such monomer, fuel cell membranes, membrane electrode assemblies, and methods of making fluoropolymers.

Perfluorosulfonyl monomers suitable for fluoropolymers and fuel cell membrane articles

Described herein is a coating composition comprising: (a) a metal catalyst, wherein the metal catalyst comprises at least one of platinum, ruthenium, iridium, and alloys and combinations thereof; (b) an at least highly fluorinated ionomer comprising a polymer backbone and a plurality of first side chains pendant therefrom, wherein the first side chain comprises at least one protogenic group, wherein the protogenic group is selected from a sulfonic acid, a bis(sulfonyl)imide, a sulfonamide, a sulfonyl methide, and salts and combinations thereof, and wherein the polymer backbone comprises an average of at least 14 carbon atoms between adjacent first side chains along the polymer backbone; and (c) a solvent. Such coating compositions may be used to make electrodes for electrochemical cells and have been shown to have reduced poisoning of the catalyst.

Fluoropolymer ionomers with reduced catalyst poisoning and articles therefrom

The copolymer includes divalent units represented by formula —[CF—CF]—, at least one divalent unit represented by formula (I): and at least one divalent unit independently represented by formula (II): A is —N(RF)or a is non-aromatic, 5- to 8-membered, perfluorinated ring comprising one or two nitrogen atoms in the ring and optionally comprising at least one oxygen atom in the ring, each RFa is independently linear or branched perfluoroalkyl having 1 to 8 carbon atoms and optionally interrupted by at least one catenated O or N atom, each Y is independently —H or —F, with the proviso that one Y may be —CF, h is 0, 1, or 2, each i is independently 2 to 8, and j is 0, 1, or 2. A catalyst ink and polymer electrolyte membrane including the copolymer are also provided.

Fluorinated copolymer and compositions and articles including the same

Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.

Anion exchange membranes based on polymerization of long chain alpha olefins

Hydrocarbon polymers containing ammonium functionality

Described herein are nitrogen-containing multi-block copolymers, as well as methods for making such multi-block copolymers, and articles comprising such multi-block copolymers. The nitrogen-containing multi-block copolymers contains at least one A block comprising polyisoprene; and at least one B block comprising amino-functionalized polybutadiene, the amino-functionalized polybutadiene comprising nitrogen-containing pendant groups.

Nitrogen-containing multi-block copolymers and method of making

Cationic polymers for use as anion exchange polyelectrolytes

A separation membrane for selectively separating (e.g., pervaporating) a first fluid (e.g., a first liquid) from a mixture comprising the first fluid (e.g., first liquid) and a second fluid (e.g., second liquid), wherein the separation membrane includes a polymeric ionomer that has a highly fluorinated backbone and recurring pendant groups according to the following formula (Formula I): &#x2014;O&#x2014;R&#x2014;[&#x2014;SO&#x2014;N(Z+)&#x2014;SO&#x2014;R&#x2014;]&#x2014;[SO]-Q wherein: Ris a perfluorinated organic linking group; R is an organic linking group; Zis H, a monovalent cation, or a multivalent cation; Q is H, F, &#x2014;NH, &#x2014;NH, &#x2014;OY, or &#x2014;CF+1; Yis H, a monovalent cation, or a multivalent cation; x=1 to 4; m=0 to 6; and n=0 or 1; with the proviso that at least one of morn must be non-zero.

Polymeric ionomer separation membranes and methods of use

An automated roll to roll method of making a fuel cell roll good subassembly is described wherein an elongated first subgasket web having a plurality of apertures is moved relative to a plurality of individual electrolyte membranes, each individual electrolyte membrane having a center region. The individual electrolyte membranes are aligned with the first subgasket web so that a center region of each electrolyte membrane is aligned with an aperture of the first subgasket web and the individual electrolyte membranes are attached to the first subgasket web.

Fuel cell subassemblies incorporating subgasketed thrifted membranes

An electrolyte membrane having a proton conducting polymer reinforced with a nanofiber mat made from a nanofiber comprising a fiber material selected from polymers and polymer blends; wherein the fiber material has a fiber material proton conductivity; wherein the proton conducting polymer has a proton conducting polymer conductivity; and wherein the fiber material proton conductivity is less than the proton conducting polymer conductivity, and methods of making. In some embodiments, the nanofiber further comprises a proton conducting polymer.

Reinforced electrolyte membrane

A fuel cell roll good subassembly is described that includes a plurality of individual electrolyte membranes. One or more first subgaskets are attached to the individual electrolyte membranes. Each of the first subgaskets has at least one aperture and the first subgaskets are arranged so the center regions of the individual electrolyte membranes are exposed through the apertures of the first subgaskets. A second subgasket comprises a web having a plurality of apertures. The second subgasket web is attached to the one or more first subgaskets so the center regions of the individual electrolyte membranes are exposed through the apertures of the second subgasket web. The second subgasket web may have little or no adhesive on the subgasket surface facing the electrolyte membrane.

Shaped microporous articles are produced from polyvinylidene fluoride (PVDF) and nucleating agents using thermally induced phase separation (TIPS) processes. The shaped microporous article is oriented in at least one direction at a stretch ratio of at least approximately 1.1 to 1.0. The shaped article may also comprise a diluent, glyceryl triacetate. The shaped microporous article may also have the micropores filled with a sufficient quantity of ion conducting electrolyte to allow the membrane to function as an ion conductive membrane. The method of making a microporous article comprises the steps of melt blending polyvinylidene fluoride, nucleating agent and glyceryl triacetate; forming a shaped article of the mixture; cooling the shaped article to cause crystallization of the polyvinylidene fluoride and phase separation of the polyvinylidene fluoride and glyceryl triacetate; and stretching the shaped article in at least one direction at a stretch ratio of at least approximately 1.1 to 1.0.

Microporous PVDF films

A first transport system moves a web comprising a subgasketed CCM layer and an application system applies a crosslinkable resin to at least a subgasketed portion of the subgasketed CCM layer. The crosslinkable resin preferably comprises a photocurable cationic crosslinkable resin. A first curing apparatus subjects an exposed surface of the crosslinkable resin to a photo curing process to initiate curing of the crosslinkable resin. A second transport system moves a GDL into adhering contact with a partially cured exposed surface of the crosslinkable resin of the CCM layer so as to form an MEA layer. A second curing apparatus subjects the GDL, partially cured crosslinkable resin, and CCM layer structure to a thermal curing process to substantially complete curing of the crosslinkable resin. A converting system is configured to receive the MEA layer and produce a plurality of discrete MEAs from the MEA layer.

Manufacturing of fuel cell membrane electrode assemblies incorporating photocurable cationic crosslinkable resin gasket

A fluorochemical derived from monomers with a side chain, wherein the side chain includes a perfluoroalkyl group with 1-6 carbon atoms and a hydrocarbon spacer group attached to the perfluoroalkyl group, wherein the spacer group has 15-50 carbon atoms. The perfluoroalkyl group is non-crystallizable at room temperature and the spacer group is crystallizable at room temperature.

Side chain fluorochemicals with crystallizable spacer groups

Growing community of inventors

Hastings, MN, United States of America

Michael Andrew Yandrasits