Patents by Inventor Virginie Viallet

Virginie Viallet 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 PREPARING A SOLID-STATE BATTERY BY SINTERING UNDER PULSATING CURRENT
    Publication number: 20170040643
    Abstract: An “all-solid-state” Li-ion battery comprising a monolithic body formed by at least three superposed layers, including: at least one layer of a negative-electrode composite comprising at least one active negative-electrode material, at least one solid electrolyte, and at least one electron-conductivity providing agent. The at least one layer of a positive-electrode composite has at least one active lithium-based positive-electrode material, at least one solid electrolyte, and at least one electron-conductivity providing agent. The at least one intermediate solid-electrolyte layer separating the composite negative- and positive-electrode layers from one another. The solid-electrolyte content in each of the composite electrode layers independently varies from 10 to 80 wt %. The content of the electron-conductivity providing agent in each of the composite electrode layers independently varies from 2 to 25 wt %.
    Type: Application
    Filed: July 19, 2016
    Publication date: February 9, 2017
    Inventors: Michael DOLLE, Patrick Rozier, Gaelle Delaizir, Jean-Marie Tarascon, Virginie Viallet, Mathieu Morcrette, Vincent Seznec, Renaud Bouchet, Abdelmaula Aboulaich, Laurence Tortet
  • Method for preparing a solid-state battery by sintering under pulsating current
    Patent number: 9431637
    Abstract: The present invention relates to a method for preparing a completely solid Li-ion battery having a solid state body wherein the battery is assembled in a single step by stacking at least one layer of a powder mix including a positive electrode active material and a solid electrolyte, at least one intermediate layer of a solid electrolyte and at least one layer of a powder mix including a negative electrode active material and a solid electrolyte, and simultaneous sintering of the three layers at a pressure of at least 20 MPa, under pulsating current. The invention also relates to the Li-ion battery obtained by such a method.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: August 30, 2016
    Assignee: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Michael Dolle, Patrick Rozier, Gaelle Delaizir, Jean-Marie Tarascon, Virginie Viallet, Mathieu Morcrette, Vincent Seznec, Renaud Bouchet, Abdelmaula Aboulaich, Laurence Tortet
  • METHOD FOR PREPARING A SOLID-STATE BATTERY BY SINTERING UNDER PULSATING CURRENT
    Publication number: 20130189562
    Abstract: The present invention relates to a method for preparing a completely solid Li-ion battery having a solid state body wherein the battery is assembled in a single step by stacking at least one layer of a powder mix including a positive electrode active material and a solid electrolyte, at least one intermediate layer of a solid electrolyte and at least one layer of a powder mix including a negative electrode active material and a solid electrolyte, and simultaneous sintering of the three layers at a pressure of at least 20 MPa, under pulsating current. The invention also relates to the Li-ion battery obtained by such a method.
    Type: Application
    Filed: February 17, 2011
    Publication date: July 25, 2013
    Inventors: Michael Dolle, Patrick Rozier, Gaelle Delaizir, Jean-Marie Tarascon, Virginie Viallet, Mathieu Morcrette, Vincent Seznec, Renaud Bouchet, Abdelmaula Aboulaich, Laurence Tortet