Patents Assigned to L'Universite d'Orleans
  • Composite containing carbonized biopolymers and carbon nanotubes and method of making the composite
    Patent number: 8059389
    Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: November 15, 2011
    Assignees: SGL Carbon SE, Centre National de la Recherche Scientifique, L'Universite d'Orleans
    Inventors: Martin Cadek, Mario Wachtler, Encarnacion Raymundo-Pinero, Francois Beguin
  • Electrochemical capacitor, carbonized biopolymers and carbonization process
    Patent number: 7947246
    Abstract: A carbon material suitable for the preparation of electrodes for electrochemical capacitors is obtained by single-stage carbonization of biopolymers with a large content of heteroatoms. Neither addition of an activating agent during carbonization nor subsequent gas phase activation is necessary. Several biopolymers which are available by extraction from seaweed are suitable precursors. Alternatively, the seaweed containing such biopolymers is carbonized directly.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: May 24, 2011
    Assignees: SGL Carbon SE, Centre National de la Recherche Sientifique, L'Universite d'Orleans
    Inventors: Martin Cadek, Francois Beguin, Encarnacion Raymundo-Pinero
  • COMPOSITE CONTAINING CARBONIZED BIOPOLYMERS AND CARBON NANOTUBES AND METHOD OF MAKING THE COMPOSITE
    Publication number: 20100033902
    Abstract: A composite suitable as a charge-storing material for electrochemical capacitors contains carbon nanotubes and a carbonaceous materiel. The carbonaceous material is the carbonization residue of a biopolymer or seaweed rich in heteroatoms. Wherein the carbonization residue of the biopolymer or seaweed is electrically conductive and has a heteroatom content as detected by XPS of at least 6%.
    Type: Application
    Filed: August 17, 2009
    Publication date: February 11, 2010
    Applicants: SGL CARBON SE, CENTRE NATIONALE DE LA RECHERCHE SCIENTIFIQUE, L'UNIVERSITÉ D'ORLÉANS
    Inventors: Martin Cadek, Mario Wachtler, Encarnacion Raymundo-Pinero, Francois Beguin
  • Carbonized Biopolymers and Carbonization Process
    Publication number: 20090052117
    Abstract: A carbon material suitable for the preparation of electrodes for electrochemical capacitors is obtained by single-stage carbonization of biopolymers with a large content of heteroatoms. Neither addition of an activating agent during carbonization nor subsequent gas phase activation is necessary. Several biopolymers which are available by extraction from seaweed are suitable precursors. Alternatively, the seaweed containing such biopolymers is carbonized directly.
    Type: Application
    Filed: August 1, 2008
    Publication date: February 26, 2009
    Applicants: SGL CARBON AG, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, L'UNIVERSITE D'ORLEANS
    Inventors: Martin Cadek, Francois Beguin, Encarnacion Raymundo-Pinero