US Patent No: 6,998,149

Number of patents in Portfolio can not be more than 2000

Process for producing a membrane electrode assembly for fuel cells

ALSO PUBLISHED AS: 20020064593

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Abstract

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A process for producing a membrane electrode assembly for fuel cells containing a polymer electrolyte membrane having a first and a second surface parallel to each other. The first surface forms a firm composite with a first catalyst layer and a first water repellent gas distribution layer and said second surface form a firm composite with a second catalyst layer and a second water repellent gas distribution layer. The catalyst layers are prepared by using inks containing electrocatalysts, one or more solvents, proton-conducting ionomer and optionally water repelling agents and pore-forming agents. In the process the two catalyst layers are applied to or contacted with the respective surfaces of the polymer electrolyte membrane successively, wherein during the application or contacting process to one surface always the opposite surface of the membrane is supported.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
UMICORE AG & CO. KGHANAU-WOLFGANG320

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diehl, Manfred Frankfurt, DE 20 224
Kohler, Joachim Burchköbel, DE 16 104
Starz, Karl-Anton Rodenbach, DE 29 385
Wittpahl, Sandra Obertshausen, DE 24 71

Cited Art Landscape

Patent Info (Count) # Cites Year
 
UMICORE AG & CO. KG (2)
5,861,222 Gas diffusion electrode for membrane fuel cells and method of its production 41 1997
6,156,449 Catalyst layer for polymer electrolyte fuel cells 29 1999
 
DEUTSCHE FORSCHUNGSANSTALT FUR LUFT-UND RAUMFAHRT E.V. (1)
5,761,793 Process for the production of a composite consisting of electrode material, catalyst material and a solid-electrolyte membrane 28 1996
 
E. I. DU PONT DE NEMOURS AND COMPANY (1)
6,645,336 Extrusion coating process 7 2000
 
EMERGENT POWER INC. (1)
6,383,556 Method for forming a membrane electrode diffusion assembly for use in an ion exchange membrane fuel cell 5 2001
 
ENERGY, UNITED STATES DEPARTMENT OF (1)
4,876,115 Electrode assembly for use in a solid polymer electrolyte fuel cell 158 1988
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
6,074,692 Method of making MEA for PEM/SPE fuel cell 34 1998
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
6,015,635 Electrode for fuel cell and method of manufacturing electrode for fuel cell 14 1998

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SOUTHWEST RESEARCH INSTITUTE (2)
7,968,488 Two-dimensional composite particle adapted for use as a catalyst and method of making same 3 2007
8,524,364 Two-dimensional composite particle adapted for use as a catalyst and method of making same 0 2011
 
CABOT CORPORATION (1)
7,713,899 Method of producing membrane electrode assemblies for use in proton exchange membrane and direct methanol fuel cells 7 2006
 
DAIMLER AG (1)
8,586,265 Method of forming membrane electrode assemblies for electrochemical devices 0 2007
 
E. I. DU PONT DE NEMOURS AND COMPANY (1)
7,316,794 Continuous production of catalyst coated membranes 3 2002
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
7,414,004 Gas diffusion layer, electrode and membrane electrode assembly for fuel cell, and production methods thereof 0 2004
 
MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN E.V. (1)
8,164,881 Porous carbon electrode with conductive polymer coating 3 2007
 
UMICORE AG & CO. KG (1)
7,285,307 Process for producing catalyst-coated membranes and membrane-electrode assemblies for fuel cells 1 2003

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