Patents by Inventor Jean Pol Dodelet
Jean Pol Dodelet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9573117Abstract: A catalyst precursor comprising (A) a microporous support; (B) a non-noble metal precursor; and (C) a pore-filler, wherein the micropores of the microporous support are filled with the pore-filler and the non-noble metal precursor so that the micropore surface area of the catalyst precursor is substantially smaller than the micropore surface area of the support when the pore-filler and the non-noble metal precursor are absent is provided. Also, a catalyst comprising the above catalyst precursor, wherein the catalyst precursor has been pyrolysed so that the micropore surface area of the catalyst is substantially larger than the micropore surface area of catalyst precursor, with the proviso that the pyrolysis is performed in the presence of a gas that is a nitrogen precursor when the microporous support, the non-noble metal precursor and the pore-filler are not nitrogen precursors is also provided. Methods of producing the catalyst precursor and the catalyst are provided.Type: GrantFiled: September 6, 2013Date of Patent: February 21, 2017Assignees: INSTITUTE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/MCGILL UNIVERSITYInventors: Michel Lefevre, Eric Proietti, Frederic Jaouen, Jean-Pol Dodelet, Allan S. Hay
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Publication number: 20140099571Abstract: A catalyst precursor is provided having a thermally decomposable porous support; an organic coating/filling compound, and a non-precious metal precursor, wherein the organic coating/filling compound and the non-precious metal catalyst precursor coat and/or fill the pores of the thermally decomposable porous support.Type: ApplicationFiled: August 2, 2013Publication date: April 10, 2014Applicant: Institut National de la Recherche ScientifiqueInventors: Eric PROIETTI, Michel LEFEVRE, Frederic JAOUEN, Jean-Pol DODELET
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Publication number: 20140011673Abstract: A catalyst precursor comprising (A) a microporous support; (B) a non-noble metal precursor; and (C) a pore-filler, wherein the micropores of the microporous support are filled with the pore-filler and the non-noble metal precursor so that the micropore surface area of the catalyst precursor is substantially smaller than the micropore surface area of the support when the pore-filler and the non-noble metal precursor are absent is provided. Also, a catalyst comprising the above catalyst precursor, wherein the catalyst precursor has been pyrolysed so that the micropore surface area of the catalyst is substantially larger than the micropore surface area of catalyst precursor, with the proviso that the pyrolysis is performed in the presence of a gas that is a nitrogen precursor when the microporous support, the non-noble metal precursor and the pore-filler are not nitrogen precursors is also provided. Methods of producing the catalyst precursor and the catalyst are provided.Type: ApplicationFiled: September 6, 2013Publication date: January 9, 2014Applicant: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Michel LEFEVRE, Eric PROIETTI, Frederic JAOUEN, Jean-Pol DODELET, Allan S. HAY
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Patent number: 8580704Abstract: A catalyst precursor comprising (A) a microporous support, (B) a non-noble metal precursor, and (C) a pore-filler, wherein the micropores of the microporous support are filled with the pore-filler and the non-noble metal precursor so that the micropore surface area of the catalyst precursor is substantially smaller than the micropore surface area of the support when the pore-filler and the non-noble metal precursor are absent is provided. Also, a catalyst comprising the above catalyst precursor, wherein the catalyst precursor has been pyrolysed so that the micropore surface area of the catalyst is substantially larger than the micropore surface area of catalyst precursor, with the proviso that the pyrolysis is performed in the presence of a gas that is a nitrogen precursor when the microporous support, the non-noble metal precursor and the pore-filler are not nitrogen precursors is also provided. Methods of producing the catalyst precursor and the catalyst are provided.Type: GrantFiled: October 2, 2009Date of Patent: November 12, 2013Assignees: Institut National de la Recherche Scientifique, The Royal Institution for the Advancement of Learning/MCGill UniversityInventors: Michel Lefèvre, Éric Proietti, Frédéric Jaouen, Jean-Pol Dodelet, Allan S. Hay
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Publication number: 20110294658Abstract: A catalyst precursor comprising (A) a microporous support, (B) a non-noble metal precursor, and (C) a pore-filler, wherein the micropores of the microporous support are filled with the pore-filler and the non-noble metal precursor so that the micropore surface area of the catalyst precursor is substantially smaller than the micropore surface area of the support when the pore-filler and the non-noble metal precursor are absent is provided. Also, a catalyst comprising the above catalyst precursor, wherein the catalyst precursor has been pyrolysed so that the micropore surface area of the catalyst is substantially larger than the micropore surface area of catalyst precursor, with the proviso that the pyrolysis is performed in the presence of a gas that is a nitrogen precursor when the microporous support, the non-noble metal precursor and the pore-filler are not nitrogen precursors is also provided. Methods of producing the catalyst precursor and the catalyst are provided.Type: ApplicationFiled: October 2, 2009Publication date: December 1, 2011Applicant: Institut National De La Recherche ScientifiqueInventors: Michel Lefevre, Eric Proietti, Frederic Jaouen, Jean-Pol Dodelet, Allan S. Hay
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Patent number: 7250188Abstract: Metal catalyst particles are deposited on carbon nanotubes by preparing a silane solution of a metal catalyst salt, e.g. platinum or ruthenium chloride, immersing an electrically conducting substrate carrying nanotubes in the silane solution to yield a composite structure of substrate, nanotubes and catalyst, and reducing the composite structure to yield a composite of substrate, carbon nanotubes and metallic catalyst particles.Type: GrantFiled: March 31, 2004Date of Patent: July 31, 2007Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defense of her Majesty's Canadian GovernmentInventors: Jean Pol Dodelet, Xuellang Sun, Ruying Li, Dominique Villers, Sylvain Desilets
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Patent number: 7056479Abstract: Carbon nanotubes are formed on carbon paper by first depositing a metal catalyst on the carbon paper, and passing a feedstock gas containing a source of carbon over the substrate while applying an electrical current thereto to heat the substrate sufficiently to generate a reaction between the catalyst and the feedstock gas. Alternatively, inert gas under pressure is passed through a tubular metal cathode while passing an electric current through the cathode to produce a plasma of fine catalyst particles which are deposited on a porous carbon substrate, and a feedstock gas containing a source of carbon is passed over the substrate to cause a reaction between the catalyst and the carbon source resulting in the formation of carbon nanotubes.Type: GrantFiled: May 10, 2001Date of Patent: June 6, 2006Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National DefenceInventors: Jean-Pol Dodelet, Barry Stansfield, Oliver Smiljanic, Tarik Dellero, Sylvain Desilets
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Patent number: 6887451Abstract: Carbon nanotubes are produced using a silane procedure, in which a substrate such as carbon paper or stainless steel mesh is immersed in a silane solution of a metal catalyst, preferable Co:Ni in a 1:1 ratio; and a feedstock gas containing a carbon source such as ethylene is fed through the substrate and the catalyst deposited thereon while the substrate is heated by applying an electrical current thereto. Thus, a reaction occurs between the catalyst and the gas to yield carbon nanotubes supported on the conductive substrate. These composite electrodes may be used in electrochemistry or in field emitting applications.Type: GrantFiled: April 30, 2002Date of Patent: May 3, 2005Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Jean Pol Dodelet, Xuellang Sun, Sylvain Desilets
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Patent number: 6828040Abstract: The invention relates to an improved composite used as a bipolar separator plate in fuel cells. The composite of the invention comprises a steel substrate having a carbon coating thereon, the carbon coating comprises a carbon layer derived by pyrolysis of an acetylenic polymer having a content of carbon of at least 90%, the carbon layer protects the substrate against corrosion and improves long term contact resistivity, the polymer is soluble at a temperature below 110° C. in an organic solvent, and the carbon layer contacts said steel substrate. A process for preparing the composite according to the invention is also disclosed.Type: GrantFiled: May 20, 2002Date of Patent: December 7, 2004Assignees: Institut National de la Recherche Scientifique, Universite McGillInventors: Nicolas Cunningham, Allan S. Hay, Jean-Pol Dodelet, Yeuzhong Meng
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Publication number: 20030202930Abstract: Carbon nanotubes are produced using a silane procedure, in which a substrate such as carbon paper or stainless steel mesh is immersed in a silane solution of a metal catalyst, preferable Co:Ni in a 1:1 ratio; and a feedstock gas containing a carbon source such as ethylene is fed through the substrate and the catalyst deposited thereon while the substrate is heated by applying an electrical current thereto. Thus, a reaction occurs between the catalyst and the gas to yield carbon nanotubes supported on the conductive substrate. These composite electrodes may be used in electrochemistry or in field emitting applications.Type: ApplicationFiled: April 30, 2002Publication date: October 30, 2003Inventors: Jean Pol Dodelet, Xuellang Sun, Sylvain Desilets
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Publication number: 20030111334Abstract: Carbon nanotubes are formed on carbon paper by first depositing a metal catalyst on the carbon paper, and passing a feedstock gas containing a source of carbon over the substrate while applying an electrical current thereto to heat the substrate sufficiently to generate a reaction between the catalyst and the feedstock gas. Alternatively, inert gas under pressure is passed through a tubular metal cathode while passing an electric current through the cathode to produce a plasma of fine catalyst particles which are deposited on a porous carbon substrate, and a feedstock gas containing a source of carbon is passed over the substrate to cause a reaction between the catalyst and the carbon source resulting in the formation of carbon nanotubes.Type: ApplicationFiled: November 6, 2002Publication date: June 19, 2003Inventors: Jean-Pol Dodelet, Barry Stansfield, Oliver Smiljanic, Tarik Dellero, Sylvain Desilets
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Publication number: 20030099847Abstract: The invention relates to an improved composite used as a bipolar separator plate in fuel cells. The composite of the invention comprises a steel substrate having a carbon coating thereon, the carbon coating comprises a carbon layer derived by pyrolysis of an acetylenic polymer having a content of carbon of at least 90%, the carbon layer protects the substrate against corrosion and improves long term contact resistivity, the polymer is soluble at a temperature below 110° C. in an organic solvent, and the carbon layer contacts said steel substrate. A process for preparing the composite according to the invention is also disclosed.Type: ApplicationFiled: May 20, 2002Publication date: May 29, 2003Applicant: INSTITUT NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Nicolas Cunningham, Allan S. Hay, Jean-Pol Dodelet, Yuezhong Meng
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Patent number: 6239065Abstract: The invention is concerned with a process for the preparation of a supported catalyst having a nanocrystalline structure and a surface area preferably higher than 2 m2/g. The process comprises preparing by mechanical grinding a nanocrystalline material consisting of a metastable composite or alloy of at least two different elements or compounds containing at least one catalytic species and subjecting the nanocrystalline material to leaching with a leaching solution in order to eliminate totally or partially at least of one of the two elements or compounds, other than the at least one catalytic species. At least one further element or compound that is non-leachable and that acts as a support for the at least one catalytic species is added to the material during the grinding step or to the leaching solution during the leaching step.Type: GrantFiled: December 22, 1998Date of Patent: May 29, 2001Assignee: Hydro-QuebecInventors: Robert Schulz, Guy Lalande, Marie-Chantal Denis, Jean-Pol Dödelet
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Patent number: 5872074Abstract: Leached nanocrystalline materials having a high specific surface are particularly useful for storing hydrogen or as catalysts or electrocatalysts in the manufacture electrodes, especially for fuel cells. Such materials can be manufactured by preparing a nanocrystalline material consisting of a metastable composite or alloy of at least two different chemical elements. To be nanocrystalline, this material must have a crystalline structure with the grain size lower than 100 nm. Then, the so prepared nanocrystalline material can be subjected to a leaching treatment in order to eliminate partially or totally one of the elements of the composite or alloy. This leaching results in nanocrystalline materials having a porous structure and, thereby, the requested high specific surface.Type: GrantFiled: January 24, 1997Date of Patent: February 16, 1999Assignee: Hydro-QuebecInventors: Robert Schulz, Guy Lalande, Jacques Huot, Marie-Chantal Denis, Guoxian Liang, Andre Van Neste, Daniel Guay, Jean-Pol Dodelet