Patents by Inventor Sylvie Herreyre

Sylvie Herreyre 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).

  • METHOD FOR LASER TREATMENT OF A LITHIUM SURFACE
    Publication number: 20230343940
    Abstract: A method for treating a surface of a strip or film, the strip or film being made of lithium or a lithium-based alloy, the method comprising a step of radiating at least one portion of the surface of the strip or film with a laser beam, the radiating step being carried out in a controlled atmosphere, the laser beam radiating the entire area of the at least one portion of the surface of the strip or film.
    Type: Application
    Filed: April 29, 2021
    Publication date: October 26, 2023
    Applicant: SAFT
    Inventors: Philippe BOREL, Maeva GAZZIERO, Delphin LEVASSEUR, Julien BREGER, Ekaterina PAVLENKO, Olivier HUCHET, Sylvie HERREYRE
  • USE OF LITHIUM SECONDARY ELECTROCHEMICAL CELLS CONTAINING A BLEND OF A LITHIUM NICKEL OXIDE AND A LITHIUM MANGANESE IRON PHOSPHATE FOR AUTOMOTIVE APPLICATIONS
    Publication number: 20230231129
    Abstract: The use of a blend of a lithium nickel oxide and a lithium manganese iron phosphate as an active material composition in the cathode of a lithium secondary electrochemical cell for automotive applications, such as hybrid and electric vehicles. This blend allows decreasing the porosity of a lithium manganese iron phosphate-based cathode. It also allows improving the detectability of a gas release in the cell in case of an abnormal operation of the cell. It allows lowering the cell impedance at a low state of charge, typically less than 30%, and reducing the impedance increase of the cell during the cell lifespan.
    Type: Application
    Filed: June 23, 2021
    Publication date: July 20, 2023
    Applicant: SAFT
    Inventors: Cécile TESSIER, Patrick BERNARD, Kamen NECHEV, Carine STEINWAY, Xilin CHEN, Cédric GOUSSET, Sylvie HERREYRE
  • Rechargeable lithium electrochemical cell usable at low temperature
    Patent number: 6399255
    Abstract: The present invention provides a rechargeable lithium electrochemical cell comprising an electrolyte containing a lithium salt dissolved in a non-aqueous solvent, at least one positive electrode, and at least one negative electrode of the paste type containing an electrochemically active material which is a carbon compound suitable for inserting lithium ions and a binder, the cell being characterized in that said solvent contains at least one saturated cyclic carbonate and at least one linear ester of a saturated aliphatic monocarboxylic acid, and in that said binder is a polymer having no fluorine.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: June 4, 2002
    Assignee: Alcatel
    Inventors: Sylvie Herreyre, Philippe Biensan, Françoise Perton, Sylvie Barusseau
  • A RECHARGEABLE LITHIUM ELECTROCHEMICAL CELL USABLE AT LOW TEMPERATURE
    Publication number: 20010019800
    Abstract: The present invention provides a rechargeable lithium electrochemical cell comprising an electrolyte containing a lithium salt dissolved in a non-aqueous solvent, at least one positive electrode, and at least one negative electrode of the paste type containing an electrochemically active material which is a carbon compound suitable for inserting lithium ions and a binder, the cell being characterized in that said solvent contains at least one saturated cyclic carbonate and at least one linear ester of a saturated aliphatic monocarboxylic acid, and in that said binder is a polymer having no fluorine.
    Type: Application
    Filed: December 29, 1998
    Publication date: September 6, 2001
    Inventors: SYLVIE HERREYRE, PHILIPPE BIENSAN, FRANCOISE PERTON, SYLVIE BARUSSEAU