Patents by Inventor Boniface Kokoh

Boniface Kokoh 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 producing a graphene oxide-based compound for an air electrode of a metal-air battery and associated compound
    Patent number: 11489159
    Abstract: A method for producing a graphene oxide-based compound for an air electrode of a metal-air battery. A nitrogen and sulfur-based organic compound is added to an aqueous suspension of a graphene oxide. The water of the suspension is evaporated in order to obtain a powder. This powder is heated under an inert atmosphere in order to sublime the organic compound and stimulate the incorporation of nitrogen from the organic compound into the graphitic sites of the graphene oxide. The nitrogen and sulfur-doped graphene oxide is added to a second aqueous suspension comprising a cobalt nitrate-based compound. This second suspension is heated in order to form nanoparticles of cobalt oxide at the surface of at least one nitrogen and sulfur-doped graphene oxide sheet.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: November 1, 2022
    Assignees: ELECTRICITE DE FRANCE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS
    Inventors: Philippe Stevens, Gwenaelle Toussaint, Aurelien Louis Habrioux, Clement Aime Comminges, Boniface Kokoh, Ismail Abidat, Teko Wilhelmin Napporn, David Portehault, Emmanuelle Cazayus-Claverie, Olivier Durupthy, Corinne Chaneac
  • METHOD FOR PRODUCING A GRAPHENE OXIDE-BASED COMPOUND FOR AN AIR ELECTRODE OF A METAL-AIR BATTERY AND ASSOCIATED COMPOUND
    Publication number: 20200313185
    Abstract: A method for producing a graphene oxide-based compound for an air electrode of a metal-air battery. A nitrogen and sulfur-based organic compound is added to an aqueous suspension of a graphene oxide. The water of the suspension is evaporated in order to obtain a powder. This powder is heated under an inert atmosphere in order to sublime the organic compound and stimulate the incorporation of nitrogen from the organic compound into the graphitic sites of the graphene oxide. The nitrogen and sulfur-doped graphene oxide is added to a second aqueous suspension comprising a cobalt nitrate-based compound. This second suspension is heated in order to form nanoparticles of cobalt oxide at the surface of at least one nitrogen and sulfur-doped graphene oxide sheet.
    Type: Application
    Filed: December 5, 2018
    Publication date: October 1, 2020
    Inventors: Philippe Stevens, Gwenaelle Toussaint, Aurelien Louis Habrioux, Clement Aime Comminges, Boniface Kokoh, Ismail Abidat, Teko Wilhelmin Napporn, David Portehault, Emmanuelle Cazayus-Claverie, Olivier Durupthy, Corinne Chaneac