Patents Assigned to BASF Fuel Cell GmbH
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Patent number: 11569512Abstract: The present invention relates to a membrane electrode unit comprising a polymer membrane doped with a mineral acid as well as two electrodes, characterized in that the polymer membrane comprises at least one polymer with at least one nitrogen atom and at least one electrode comprises a catalyst which is formed from at least one precious metal and at least one metal less precious according to the electrochemical series.Type: GrantFiled: February 20, 2005Date of Patent: January 31, 2023Assignee: BASF FUEL CELL GMBHInventors: Thomas Schmidt, Oemer Uensal, Mathias Weber, Isabel Kundler, Gordon Calundann, Jochen Baurmeister
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Patent number: 9559367Abstract: The present invention relates to membrane electrode assemblies comprising two electrochemically active electrodes separated by a polymer electrolyte membrane, there being a polyimide layer on each of the two surfaces of the polymer electrolyte membrane that are in contact with the electrodes. The present membrane electrode assemblies may be used in particular for producing fuel cells which have a particularly high long-term stability.Type: GrantFiled: July 31, 2003Date of Patent: January 31, 2017Assignee: BASF Fuel Cell GmbHInventors: Jürgen Pawlik, Jochen Baurmeister, Christoph Padberg
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Patent number: 8945736Abstract: The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.Type: GrantFiled: October 24, 2012Date of Patent: February 3, 2015Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Joachim Kiefer, Isabel Kundler, Mathias Weber, Christoph Padberg, Thomas Schmidt, Jochen Baurmeister, Gordon Calundann, Glen Hoppes
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Patent number: 8859150Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, owing to its excellent chemical and thermal properties, be used for a variety of purposes and is particularly suitable as a polymer-electrolyte membrane (PEM) for the production of membrane electrode units for so-called PEM fuel cells.Type: GrantFiled: December 30, 2004Date of Patent: October 14, 2014Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Kilian Brehl, Edmund Thiemer
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Patent number: 8822091Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, owing to its excellent chemical and thermal properties, be used for a variety of purposes and is particularly suitable as a polymer-electrolyte membrane (PEM) for the production of membrane electrode units for so-called PEM fuel cells.Type: GrantFiled: December 30, 2004Date of Patent: September 2, 2014Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Gunter Christ, Kathrin Wirth
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Patent number: 8765905Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, owing to its excellent chemical and thermal properties, be used for a variety of purposes and is particularly suitable as a polymer-electrolyte membrane (PEM) for the production of membrane electrode units for so-called PEM fuel cells.Type: GrantFiled: December 30, 2004Date of Patent: July 1, 2014Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Ursula Leister, Melanie Schlegel
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Patent number: 8716356Abstract: The present invention relates to novel polyazoles, a proton-conducting polymer membrane based on these polyazoles and its use as polymer electrolyte membrane (PEM) for producing membrane-electrode units for PEM-fuel cells, and also other shaped bodies comprising such polyazoles.Type: GrantFiled: September 14, 2012Date of Patent: May 6, 2014Assignee: BASF Fuel Cell GmbHInventors: Gordon Calundann, Brian Benicewicz, Jochen Baurmeister
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Patent number: 8460841Abstract: A method for forming a mixed metal coating on a gas diffusion medium substantially free of ionomeric components which includes the steps of subjecting an electrically conductive web to a first ion beam having an energy not higher than 500 eV, then to a second beam having an energy of at least 500 eV containing the ions of a first metal, and to at least a third beam having an energy of at least 500 eV containing the ions of a noble metal. The invention also relates to gas diffusion electrodes.Type: GrantFiled: June 30, 2006Date of Patent: June 11, 2013Assignee: BASF Fuel Cell GmbHInventors: Andrea Gulla, Robert Allen
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Publication number: 20130095409Abstract: The present invention relates to a method for the conditioning of membrane electrode assemblies for fuel cells in which the output of the membrane electrode assemblies used can be increased and therefore the efficiency of the resulting polymer electrolyte membrane fuel cells can be improved.Type: ApplicationFiled: October 24, 2012Publication date: April 18, 2013Applicant: BASF Fuel Cell GmbHInventor: BASF Fuel Cell GmbH
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Publication number: 20130012607Abstract: The present invention relates to novel polyazoles, a proton-conducting polymer membrane based on these polyazoles and its use as polymer electrolyte membrane (PEM) for producing membrane-electrode units for PEM-fuel cells, and also other shaped bodies comprising such polyazoles.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: BASF Fuel Cell GmbHInventors: Gordon Calundann, Brian Benicewicz, Jochen Baurmeister
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Patent number: 8293806Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and is particularly useful as polymer electrolyte membrane (PEM) to produce membrane electrode units for PEM fuel cells.Type: GrantFiled: July 29, 2011Date of Patent: October 23, 2012Assignee: BASF Fuel Cell GmbHInventors: Gordon Calundann, Michael J. Sansone, Oemer Uensal, Joachim Kiefer
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Patent number: 8277983Abstract: The present invention relates to novel polyazoles, a proton-conducting polymer membrane based on these polyazoles and its use as polymer electrolyte membrane (PEM) for producing membrane-electrode units for PEM-fuel cells, and also other shaped bodies comprising such polyazoles.Type: GrantFiled: September 24, 2010Date of Patent: October 2, 2012Assignee: BASF Fuel Cell GmbHInventors: Gordon Calundann, Brian Benicewicz, Jochen Baurmeister
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Patent number: 8273277Abstract: A method for producing a proton-conducting, polyazole-containing membrane, in which A) a composition containing polyphosphoric acid and at least one polyazole and exhibiting a solution viscosity in the range from 10 Pa·s to 1000 Pa·s, measured to DIN 53018 at the temperature at the orifice during production of the membrane, is pressed through an orifice at a temperature in the range from 25° C. to 300° C., and B) the composition is then solidified.Type: GrantFiled: September 11, 2007Date of Patent: September 25, 2012Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Mathias Weber, Gunter Christ, Christian Dörr, Daniel Walczyk, Tequila Harris
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Patent number: 8206870Abstract: A membrane electrode assembly comprising two electrode separated by a polymer electrolyte membrane wherein the surfaces of the membrane are in contact with the electrodes so that the first electrode partially or totally covers the front of the membrane and the second electrode partially or totally covers the back of the membrane; two gasket layers wherein the first gasket layer partially covers the front of the membrane and/or the first electrode and the second gasket layer partially covers the back of the membrane and/or the second electrode the assembly also comprises a second gasket material on the front of the first gasket layer and on the back of the second gasket layer; each of the gasket layers comprises at least one recess; the second gasket material on the front of the first gasket layer is in contact with the second gasket material on the back of the second gasket layer.Type: GrantFiled: August 5, 2005Date of Patent: June 26, 2012Assignee: BASF Fuel Cell GmbHInventors: Glen Hoppes, Raymond Puffer
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Patent number: 8177863Abstract: A method for production of a membrane/electrode unit for a fuel cell is disclosed. The conducting polymer membrane is compressed with two electrodes until a given compression is achieved. The method permits an increase in resting voltage of the membrane/electrode unit in use, the amount of damage during production is reduced, and a constant thickness within a production run is achieved.Type: GrantFiled: June 23, 2011Date of Patent: May 15, 2012Assignee: BASF Fuel Cell GmbHInventors: Christoph Padberg, Jürgen Sinschek, Torsten Raap, Ulf Hofmann
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Patent number: 8168105Abstract: The present invention relates to an acid-doped polymer membrane based on polyazoles. The acid-doped polymer membrane can be used in a variety of applications because of its excellent mechanical properties and is useful as polymer electrolyte membrane (PEM) in PEM fuel cells. A doped polymer membrane based on polyazoles is obtained by a process comprising the steps of: A) casting a film using a solution of polymers based on polyazoles in a polar, aprotic organic solvent; B) drying the film formed in step A) until it is self-supporting; C) treating the film obtained in step B) with a treatment liquid at a temperature in the range from room temperature to the boiling point of the treatment liquid; D) drying and/or dabbing the film treated according to step C) to remove the treatment liquid from step C); and E) doping the film treated according to step D) with a doping agent.Type: GrantFiled: March 9, 2010Date of Patent: May 1, 2012Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Joachim Kiefer, Jochen Baurmeister, Jürgen Pawlik, Werner Kraus, Frauke Jordt
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Patent number: 8142917Abstract: The present invention relates to a proton-conducting polymer membrane which comprises polyazole blends and is obtainable by a process comprising the steps A) preparation of a mixture comprising polyphosphoric acid, at least one polyazole (polymer A) and/or one or more compounds which are suitable for forming polyazoles under the action of heat according to step B), B) heating of the mixture obtainable according to step A) under inert gas to temperatures of up to 400° C., C) application of a layer using the mixture from step A) and/or B) to a support, D) treatment of the membrane formed in step C) until it is self-supporting, wherein at least one further polymer (polymer B) which is not a polyazole is added to the composition obtainable according to step A) and/or step B) and the weight ratio of polyazole to polymer B is in the range from 0.1 to 50.Type: GrantFiled: May 10, 2010Date of Patent: March 27, 2012Assignee: BASF Fuel Cell GmbHInventors: Oemer Uensal, Joachim Kiefer, Gordon Calundann, Michael J. Sansone, Brian Benicewicz, Eui Wong Choe
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Patent number: 8076379Abstract: The present invention relates to a novel proton-conducting polymer membrane based on aromatic polyazoles which contain sulfonic acid groups and in which the sulfonic acid groups are covalently bound to the aromatic ring of the polymer and which can, owing to their excellent chemical and thermal properties, be used for a variety of purposes. Such materials are particularly useful for the production of polymer electrolyte membranes (PEMs) in PEM fuel cells.Type: GrantFiled: June 14, 2003Date of Patent: December 13, 2011Assignee: BASF Fuel Cell GmbHInventors: Gordon Calundann, Michael J. Sansone, Oemer Uensal, Joachim Kiefer
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Patent number: 8066784Abstract: The invention relates to a method for production of a membrane/electrode unit, whereby a conducting polymer membrane is compressed with two electrodes until a given compression is achieved. Said method permits an increase in resting voltage of the membrane/electrode unit in use, the amount of damage during production is reduced and a constant thickness within a production run is achieved.Type: GrantFiled: July 14, 2005Date of Patent: November 29, 2011Assignee: BASF Fuel Cell GmbHInventors: Christoph Padberg, Jürgen Sinschek, Torsten Raap, Ulf Hofmann
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Publication number: 20110288187Abstract: The present invention relates to a novel proton-conducting polymer membrane based on polyazoles which can, because of its excellent chemical and thermal properties, be used in a variety of ways and is particularly useful as polymer electrolyte membrane (PEM) to produce membrane electrode units for PEM fuel cells.Type: ApplicationFiled: July 29, 2011Publication date: November 24, 2011Applicant: BASF Fuel Cell GmbHInventors: Gordon Calundann, Michael J. Sansone, Oemer Uensal, Joachim Kiefer