Patents by Inventor Audrey Martinent
Audrey Martinent 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: 8771896Abstract: A fuel cell comprises at least two current collectors, an electrically insulating separator element and solid electrolyte. Each current collector comprises at least one transverse passage passing through it from a first surface to a second surface and the separator element comprising opposite first and second faces is arranged between the current collectors. A plurality of transverse channels pass through the separator element from the first face to the second face and the ionically conducting solid electrolyte occupies the volume bounded by the channels of the separator element and by the passages of the current collectors. The separator element is formed by a thermoplastic polymer material and hard particles are arranged in the transverse channels.Type: GrantFiled: December 4, 2006Date of Patent: July 8, 2014Assignee: Commissariat a l'Energie AtomiqueInventors: Jean-Yves Laurent, Philippe Capron, Audrey Martinent, Denis Locatelli
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Patent number: 8617758Abstract: A hydrogen-oxygen fuel cell including a main cell and an auxiliary cell sharing a common electrolyte and having at least one separate electrode, circuitry for measuring the humidity ratio of the electrolyte, and control and switching circuitry for operating the main and auxiliary cells in parallel on a same load or separately on two different loads.Type: GrantFiled: January 15, 2010Date of Patent: December 31, 2013Assignees: STMicroelectronics (Tours) SAS, Commissariat à l'Énergie Atomique et aux Énergies AlternativesInventors: Nicolas Karst, Pierre Bouillon, Nelly Martin, Audrey Martinent
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Patent number: 8476323Abstract: The invention relates to a fluorocarbon polymer material comprising a backbone with the following unit: wherein: Z is a quaternary ammonium group, Y1 and Y2 are each independently an oxygen heteroatom or a sulphur heteroatom, A is a fluorinated or perfluorinated straight chain having from 2 to 6 carbon atoms, R1 represents a phenyl or aryl group or a —CR2R3— group, and R4 is selected from the group consisting of a hydrogen atom, a straight or branched, cyclic or acyclic, alkyl or halogenated alkyl group, and a group represented by the following formula: m is an integer comprised between 0 and 10, preferably between 0 and 3; m?, n and r are integers, each independently equal to 0 or 1; and s is equal to 0 or 1, provided that when s is equal to 0, then R4 is different from the hydrogen atom.Type: GrantFiled: February 2, 2011Date of Patent: July 2, 2013Assignees: Commissariat a l'Energie Atomique et aux Energies Alternatives, Centre Nationale de Recherche Scientifique, Ecole Nationale Superieure de Chimie de MontpellierInventors: Audrey Martinent, Ali Alaaeddine, Bruno Ameduri, Philippe Capron
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Patent number: 8394556Abstract: The present invention relates to a support for a planar fuel cell core, produced using a material permeable to the fuel of the cell, and sealed over at least one of its outer faces.Type: GrantFiled: December 7, 2009Date of Patent: March 12, 2013Assignee: Commissariat a l'Energie AtomiqueInventors: Philippe Capron, Isabelle Rougeaux, Jérôme Delmas, Audrey Martinent
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Publication number: 20130059225Abstract: A fuel cell is provided with an individual cell having first and second electrodes and a membrane formed by a polymer electrolyte including an ionically conducting part. The polymer electrolyte includes at least an ionically non-conducting part forming a first inactive area localized on a first uncovered part not covered by the first electrode and/or a second inactive area localized on a second uncovered part not covered by the second electrode. A cover encloses the cell and is provided with an inner wall mechanically fixed onto at least the first or second inactive area by adhesion means.Type: ApplicationFiled: March 21, 2011Publication date: March 7, 2013Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Vincent Faucheux, Antoine Latour, Jean-Yves Laurent, Audrey Martinent
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Patent number: 8017283Abstract: An electrode for an alkali fuel cell comprises an active layer formed by a bilayer or by a stack of a plurality of bilayers. Each bilayer is composed of a catalytic layer comprising catalyst particles of nanometric size and of a porous layer comprising two opposite faces one of which is in contact with the catalytic layer. The porous layer is made from a porous composite material comprising a hydroxide ion conducting polymer matrix in which a metallic lattice is formed constituting a plurality of electronically conducting paths connecting the two opposite faces of the porous layer. Advantageously, fabrication of such an electrode is obtained by successively performing vacuum deposition of the catalyst particles and vacuum co-deposition of the hydroxide ion conducting polymer and of the metal on a free surface of a support.Type: GrantFiled: October 18, 2006Date of Patent: September 13, 2011Assignees: Commissariat a l'Energie Atomique, Universite Montpellier II, Centre National de la Recherche ScientifiqueInventors: Audrey Martinent, Jean-Yves Laurent, Max Perrin, Mauricio Schieda, Jean Durand, Stephanie Roualdes
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Publication number: 20110190404Abstract: The invention relates to a fluorocarbon polymer material comprising a backbone with the following unit: wherein: Z is a quaternary ammonium group, Y1 and Y2 are each independently an oxygen heteroatom or a sulphur heteroatom, A is a fluorinated or perfluorinated straight chain having from 2 to 6 carbon atoms, R1 represents a phenyl or aryl group or a —CR2R3— group, and R4 is selected from the group consisting of a hydrogen atom, a straight or branched, cyclic or acyclic, alkyl or halogenated alkyl group, and a group represented by the following formula: m is an integer comprised between 0 and 10, preferably between 0 and 3; m?, n and r are integers, each independently equal to 0 or 1; and s is equal to 0 or 1, provided that when s is equal to 0, then R4 is different from the hydrogen atom.Type: ApplicationFiled: February 2, 2011Publication date: August 4, 2011Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIERInventors: Audrey MARTINENT, Ali ALAAEDDINE, Bruno AMEDURI, Philippe CAPRON
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Publication number: 20100297480Abstract: A lithium battery comprises at least a positive electrode containing a material whose lithium insertion and deinsertion potential is lower than or equal to 3.5 Volts in relation to the potential of the Li+/Li couple, a negative electrode and a non-aqueous electrolyte disposed between the positive and negative electrodes. The electrolyte comprises at least a lithium salt dissolved in an aprotic organic solvent wherein a polymerizable additive is added, chosen from carbazol and the derivatives thereof and being used to prevent the battery from operating as soon as the voltage at the terminal connections of the battery reaches a value resulting in polymerization of the additive.Type: ApplicationFiled: August 6, 2010Publication date: November 25, 2010Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Audrey MARTINENT, Sébastien Martinet, Hélène Lignier, Djamel Mourzagh
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Publication number: 20100183932Abstract: A hydrogen-oxygen fuel cell including a main cell and an auxiliary cell sharing a common electrolyte and having at least one separate electrode, circuitry for measuring the humidity ratio of the electrolyte, and control and switching circuitry for operating the main and auxiliary cells in parallel on a same load or separately on two different loads.Type: ApplicationFiled: January 15, 2010Publication date: July 22, 2010Applicants: STMicroelectronics (Tours) SAS, Commissariat A L'energie AtomiqueInventors: Nicolas Karst, Pierre Bouillon, Nelly Martin, Audrey Martinent
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Publication number: 20100098993Abstract: The present invention relates to a support for a planar fuel cell core, produced using a material permeable to the fuel of the cell, and sealed over at least one of its outer faces.Type: ApplicationFiled: December 7, 2009Publication date: April 22, 2010Applicant: Commissariat A L'Energie AtomiqueInventors: Philippe CAPRON, Isabelle Rougeaux, Jérôme Delmas, Audrey Martinent
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Publication number: 20090220836Abstract: The invention relates to a process for the manufacture of an ion-conducting polymer membrane for a fuel cell and to a fuel cell core comprising such a membrane. It also relates to a fuel cell comprising such a membrane and/or such a cell core. The process of the invention comprises manufacturing an ion-conducting polymer membrane of a fuel cell by plasma chemical vapor deposition of at least two identical or different polymerizable monomers, each comprising: at least one polymerizable group, and at least one precursor group of the ion-conducting functional group chosen from the group formed by a phosphonyl ester, an acyl ester, a sulfonyl ester, a carbonyl halide or a thionyl halide.Type: ApplicationFiled: February 12, 2009Publication date: September 3, 2009Inventors: Philippe Capron, Jerome Delmas, Audrey Martinent, Isabelle Rougeaux
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Publication number: 20090169945Abstract: A fuel cell comprises at least two current collectors, an electrically insulating separator element and solid electrolyte. Each current collector comprises at least one transverse passage passing through it from a first surface to a second surface and the separator element comprising opposite first and second faces is arranged between the current collectors. A plurality of transverse channels pass through the separator element from the first face to the second face and the ionically conducting solid electrolyte occupies the volume bounded by the channels of the separator element and by the passages of the current collectors. The separator element is formed by a thermoplastic polymer material and hard particles are arranged in the transverse channels.Type: ApplicationFiled: December 4, 2006Publication date: July 2, 2009Applicant: Commissariat A L'Energie AtomiqueInventors: Jean-Yves Laurent, Philippe Capron, Audrey Martinent, Denis Locatelli
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Publication number: 20090042092Abstract: An electrode for an alkali fuel cell comprises an active layer formed by a bilayer or by a stack of a plurality of bilayers. Each bilayer is composed of a catalytic layer comprising catalyst particles of nanometric size and of a porous layer comprising two opposite faces one of which is in contact with the catalytic layer. The porous layer is made from a porous composite material comprising a hydroxide ion conducting polymer matrix in which a metallic lattice is formed constituting a plurality of electronically conducting paths connecting the two opposite faces of the porous layer. Advantageously, fabrication of such an electrode is obtained by successively performing vacuum deposition of the catalyst particles and vacuum co-deposition of the hydroxide ion conducting polymer and of the metal on a free surface of a support.Type: ApplicationFiled: October 18, 2006Publication date: February 12, 2009Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE, UNIVERSITE MONTPELLIER II, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Audrey Martinent, Jean-Yves Laurent, Max Perrin, Mauricio Schieda, Jean Durand, Stephanie Roualdes
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Publication number: 20070259259Abstract: A lithium battery comprises at least a positive electrode containing a material whose lithium insertion and deinsertion potential is lower than or equal to 3.5 Volts in relation to the potential of the Li+/Li couple, a negative electrode and a non-aqueous electrolyte disposed between the positive and negative electrodes. The electrolyte comprises at least a lithium salt dissolved in an aprotic organic solvent wherein a polymerizable additive is added, chosen from carbazol and the derivatives thereof and being used to prevent the battery from operating as soon as the voltage at the terminal connections of the battery reaches a value resulting in polymerization of the additive.Type: ApplicationFiled: February 4, 2005Publication date: November 8, 2007Applicant: COMMISSARIAT A L'ENERGIE ANTOMIQUEInventors: Audrey Martinent, Sebastien Martinet, Helene Lignier, Djamel Mourzagh