Patents by Inventor Julien VULLIET

Julien VULLIET 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).

  • Patent number: 11489188
    Abstract: A method of manufacturing by magnetron cathode sputtering an electrolyte film for use in solid oxide cells (SOC). This method comprises the steps consisting of heating a substrate to a temperature ranging from 200° C. to 1200° C.; followed by subjecting the substrate to at least two treatment cycles, each treatment cycle comprising: 1) depositing one layer of a metal precursor on the substrate by magnetron cathode sputtering of a target made up of the metal precursor, the sputtering being carried out under elemental sputtering conditions; followed by 2) oxidation-crystallisation of the metal precursor forming the layer deposited on the substrate in the presence of oxygen to obtain the transformation of the metal precursor into the electrolyte material; and in that the substrate is kept at a temperature ranging from 200° C. to 1200° C. for the entire duration of each treatment cycle.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: November 1, 2022
    Assignees: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE D'ORLEANS
    Inventors: Julien Vulliet, Anne-Lise Thomann, Pierre-Laurent Coddet
  • Patent number: 11181492
    Abstract: A device keeps an electrochemical cell under current and at operating temperature during an X-ray beam diffraction analysis of a first electrode, the cell comprising a solid electrolyte interposed between the electrodes. The device comprises: first and second interconnectors having contact faces contacting the electrodes, which allow a gas flow and exchange between the interconnectors and the electrodes. The contact face of the first interconnector allows an X-ray beam to pass to the first electrode. A thermal and atmospheric containment chamber has an inner cavity housing a stack formed from the cell between the interconnectors and a cover closing the cavity, provided with a window allowing X-rays to pass through, the first interconnector being intended to be arranged facing the cover. The contact face of each interconnector is a slotted element; slotted portions of the slotted element are uniformly arranged and form 30% to 80% of the element's surface area.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: November 23, 2021
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Julien Vulliet, Cécile Autret, Christophe Honstettre
  • Publication number: 20210109043
    Abstract: A device keeps an electrochemical cell under current and at operating temperature during an X-ray beam diffraction analysis of a first electrode, the cell comprising a solid electrolyte interposed between the electrodes. The device comprises: first and second interconnectors having contact faces contacting the electrodes, which allow a gas flow and exchange between the interconnectors and the electrodes. The contact face of the first interconnector allows an X-ray beam to pass to the first electrode. A thermal and atmospheric containment chamber has an inner cavity housing a stack formed from the cell between the interconnectors and a cover closing the cavity, provided with a window allowing X-rays to pass through, the first interconnector being intended to be arranged facing the cover. The contact face of each interconnector is a slotted element; slotted portions of the slotted element are uniformly arranged and form 30% to 80% of the element's surface area.
    Type: Application
    Filed: March 29, 2018
    Publication date: April 15, 2021
    Inventors: Julien Vulliet, Cécile Autret, Christophe Honstettre
  • Publication number: 20200313218
    Abstract: A method of manufacturing by magnetron cathode sputtering an electrolyte film for use in solid oxide cells (SOC). This method comprises the steps consisting of heating a substrate to a temperature ranging from 200° C. to 1200° C.; followed by subjecting the substrate to at least two treatment cycles, each treatment cycle comprising: 1) depositing one layer of a metal precursor on the substrate by magnetron cathode sputtering of a target made up of the metal precursor, the sputtering being carried out under elemental sputtering conditions; followed by 2) oxidation-crystallisation of the metal precursor forming the layer deposited on the substrate in the presence of oxygen to obtain the transformation of the metal precursor into the electrolyte material; and in that the substrate is kept at a temperature ranging from 200° C. to 1200° C. for the entire duration of each treatment cycle.
    Type: Application
    Filed: September 25, 2018
    Publication date: October 1, 2020
    Inventors: Julien Vulliet, Anne-Lise Thomann, Pierre-Laurent Coddet
  • Patent number: 10629929
    Abstract: A test cell configured to qualify an apparatus for characterizing cells of at least one fuel cell and a method for producing such a test cell. The test cell includes a first and a second contact face respectively including a first and a second contact area entirely or partially occupying a surface of the corresponding contact face, the first and second contact faces together delimiting an interior volume. The test cell further includes an equivalent passive circuit configured to have an equivalent impedance to at least one cell of a fuel cell, the equivalent circuit including a first and a second output terminal respectively connected to the first and second contact areas, the equivalent circuit being housed in the interior volume.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: April 21, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Julien Vulliet
  • Patent number: 10403921
    Abstract: The invention relates to an electricity generating electrochemical device of the solid-oxide fuel-cell stack type. The device includes a planar assembly having at least one electrochemical cell comprised between first and second gas diffusing plates made of ceramic of expansion coefficient between 8×10?6 K?1 and 10×10?6 K?1 and drilled with equidistant holes. First and second current conductive metal grids each are connected to a conductive wire allowing current to flow out of the device. The grilles are placed on either side of the at least one electrochemical cell between this cell and each of the first and second gas diffusing plates. A clamping device mechanically holds the planar assembly together.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: September 3, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Julien Vulliet
  • Publication number: 20180048005
    Abstract: A test cell configured to qualify an apparatus for characterizing cells of at least one fuel cell and a method for producing such a test cell. The test cell includes a first and a second contact face respectively including a first and a second contact area entirely or partially occupying a surface of the corresponding contact face, the first and second contact faces together delimiting an interior volume. The test cell further includes an equivalent passive circuit configured to have an equivalent impedance to at least one cell of a fuel cell, the equivalent circuit including a first and a second output terminal respectively connected to the first and second contact areas, the equivalent circuit being housed in the interior volume.
    Type: Application
    Filed: March 16, 2016
    Publication date: February 15, 2018
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Julien VULLIET
  • Publication number: 20170365873
    Abstract: The invention relates to an electricity generating electrochemical device of the solid-oxide fuel-cell stack type. The device includes a planar assembly having at least one electrochemical cell comprised between first and second gas diffusing plates made of ceramic of expansion coefficient between 8×10?6 K?1 and 14×10?6K?1 and drilled with equidistant holes. First and second current conductive metal grids each are connected to a conductive wire allowing current to flow out of the device. The grilles are placed on either side of the at least one electrochemical cell between this cell and each of the first and second gas diffusing plates. A clamping device mechanically holds the planar assembly together.
    Type: Application
    Filed: December 15, 2015
    Publication date: December 21, 2017
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Julien VULLIET