Patents by Inventor Christophe Michot

Christophe Michot 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: 8512899
    Abstract: The present invention concerns polymers obtained by anionic initiation and bearing functions that can be activated by cationic initiations that are not reactive in the presence of anionic polymerization initiators. The presence of such cationic initiation functions allow an efficient cross-linking of the polymer after molding, particularly in the form of a thin film. It is thus possible to obtain polymers with well-defined properties in terms of molecular weight and cross-linking density. The polymers of the present invention are capable of dissolving ionic compounds inducing a conductivity for the preparation of solid electrolytes.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: August 20, 2013
    Assignee: Hydro-Quebec
    Inventors: Christophe Michot, Alain Vallee, Paul-Etienne Harvey, Michel Gauthier, Michel Armand
  • Publication number: 20130011739
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicants: UNIVERSITÉ DE MONTREAL, PHOSTECH LITHIUM INC., CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: LAURENT GAUTHIER, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Publication number: 20130001335
    Abstract: The present invention relates to a method for removing a particulate contaminant material from a particulate mixed lithium metal phosphate material, comprising the steps of providing a particulate mixed lithium metal phosphate material, including a particulate contaminant material and a fine particulate mixed lithium metal phosphate, having the mass x*m, feeding the particulate mixed lithium metal phosphate material into a fluidizing stage containing particulate mixed lithium metal phosphate material of mass m, and fluidizing it in the fluidizing stage, feeding the fluidized particulate mixed lithium metal phosphate material to a sifting stage and passing it through the sifting stage, discontinuing the feed of the particulate mixed lithium metal phosphate material into the fluidizing stage after 10 to 100 times of the mass m have been fed into the fluidizing stage, fluidizing and sifting the material present in the fluidizing stage after discontinuing the feed, until the mass of the material present in the fl
    Type: Application
    Filed: October 13, 2010
    Publication date: January 3, 2013
    Applicant: SUD-CHEMIE AG
    Inventors: Christian Vogler, Peter Bauer, Christophe Michot
  • Publication number: 20120328774
    Abstract: The present invention relates to the field of electrode materials, and more specifically, to a carbon-deposited alkali metal oxyanion electrode material as well as to a process for preparing same. More particularly, the process for preparing the carbon-deposited alkali metal oxyanion electrode material comprises a dry milling step of precursors of the alkali metal oxyanion electrode material at an energy sufficient to cause the precursors to agglomerate into strong agglomerates, and a heating step comprising pyrolysis of an organic source to obtain the carbon-deposited alkali metal oxyanion electrode material.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Applicant: PHOSTECH LITHIUM INC.
    Inventors: Guoxian Liang, Christophe Michot, Jasmin Dufour
  • Patent number: 8273481
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: September 25, 2012
    Assignees: Universitéde Montréal, Centre National de la Recherche Scientifique, Phostech Lithium Inc.
    Inventors: Laurent Gauthier, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Publication number: 20120232285
    Abstract: The invention relates to triazole salts, to their preparation and to applications thereof. The salts have at least one anionic triazolium group which carries at least one chlorosulphonyl, fluorosulphonyl or alkoxyfluorosulphonyl group, each of the anionic groups being combined with a proton or a cation that has a valency of less than or equal to 4. The salts are useful as synthesis reagents, as chemical-reaction or polymerization catalysts, and as ion-conducting materials for electrochemical generators, supercapacitors and electrochromic devices.
    Type: Application
    Filed: May 23, 2012
    Publication date: September 13, 2012
    Applicants: Universite De Montreal, Phostech Lithium Inc.
    Inventor: Christophe MICHOT
  • Publication number: 20120138867
    Abstract: The present invention relates to a process for the synthesis of a carbon-deposited alkali metal oxyanion cathode material comprising particles, wherein said particles carry, on at least a portion of the particle surface, carbon deposited by pyrolysis, said process comprising a dry high-energy milling step performed on precursors of said carbon-deposited alkali metal oxyanion prior to a solid-state thermal reaction.
    Type: Application
    Filed: November 11, 2011
    Publication date: June 7, 2012
    Applicant: PHOSTECH LITHIUM INC.
    Inventors: Guoxian LIANG, Jasmin Dufour, Michael Holzapfel, Christophe Michot
  • Publication number: 20120136136
    Abstract: A process to induce polymerization of an organic electronically conductive polymer in the presence of a partially delithiated alkali metal phosphate which acts as the polymerization initiator.
    Type: Application
    Filed: June 1, 2010
    Publication date: May 31, 2012
    Applicants: UNIVERSITE DU QUEBEC A MONTREAL, PHOSTECH LITHIUM INC
    Inventors: Steen Brian Schougaard, Michel Gauthier, Christian Kuss, David Lepage, Guoxian Liang, Christophe Michot
  • Patent number: 8133618
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: March 13, 2012
    Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Phostech Lithium Inc.
    Inventors: Laurent Gauthier, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Publication number: 20120028121
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium-ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Application
    Filed: August 25, 2011
    Publication date: February 2, 2012
    Applicants: UNIVERSITE DE MONTREAL, PHOSTECH LITHIUM INC., CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Laurent GAUTHIER, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Patent number: 8048565
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium?ion reversible electrode material, which includes providing a precursor of said lithium-ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium-ion reversible electrode materials obtained by the aforesaid process.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: November 1, 2011
    Assignees: Universite de Montreal, Centre National de la Recherche Scientifique, Phostech Lithium Inc.
    Inventors: Laurent Gauthier, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Publication number: 20110178306
    Abstract: The invention relates to triazole salts, to their preparation and to applications thereof. The salts have at least one anionic triazolium group which carries at least one chlorosulphonyl, fluorosulphonyl or alkoxyfluorosulphonyl group, each of the anionic groups being combined with a proton or a cation that has a valency of less than or equal to 4. The salts are useful as synthesis reagents, as chemical-reaction or polymerization catalysts, and as ion-conducting materials for electrochemical generators, supercapacitors and electrochromic devices.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Applicants: Phostech Lithium Inc., Universite De Montreal
    Inventor: Christophe MICHOT
  • Publication number: 20110160460
    Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, 0, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FXI0)N—(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 30, 2011
    Applicants: ACEP INC., CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE MONTREAL
    Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Nathalie Ravet
  • Publication number: 20110128674
    Abstract: The present invention is concerned with novel polar solvents and novel electrolytic compositions comprising such solvents, and having a high range of stability, as required for applications in the field of electrochemistry. The present solvents have a highly polar amide function, and preferably combine with a salt soluble in the solvent and having an anion with a delocalized charge, and at least one polymer, to form an electrolytic composition.
    Type: Application
    Filed: February 7, 2011
    Publication date: June 2, 2011
    Applicants: ACEP, INC., Centre National de La Recherche Scient., Universite de Montreal
    Inventors: Christophe MICHOT, Dany Brouillette, Daniel Baril, Jean-Yves Bergeron, Michel Armand
  • Patent number: 7919629
    Abstract: The invention relates to triazole salts, to their preparation and to applications thereof. The salts have at least one anionic triazolium group which carries at least one chlorosulphonyl, fluorosulphonyl or alkoxyfluorosulphonyl group, each of the anionic groups being combined with a proton or a cation that has a valency of less than or equal to 4. The salts are useful as synthesis reagents, as chemical-reaction or polymerization catalysts, and as ion-conducting materials for electrochemical generators, supercapacitors and electrochromic devices.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: April 5, 2011
    Assignees: Phostech Lithium Inc., Universite de Montreal
    Inventor: Christophe Michot
  • Publication number: 20110062380
    Abstract: A process for preparing an at least partially lithiated transition metal oxyanion-based lithium?ion reversible electrode material, which includes providing a precursor of said lithium?ion reversible electrode material, heating said precursor, melting same at a temperature sufficient to produce a melt including an oxyanion containing liquid phase, cooling said melt under conditions to induce solidification thereof and obtain a solid electrode that is capable of reversible lithium ion deinsertion/insertion cycles for use in a lithium battery. Also, lithiated or partially lithiated oxyanion-based-lithium?ion reversible electrode materials obtained by the aforesaid process.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 17, 2011
    Applicants: UNIVERSITE DE MONTREAL, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, PHOSTECH LITHIUM INC.
    Inventors: Laurent Gauthier, Michel Gauthier, Donald Lavoie, Christophe Michot, Nathalie Ravet
  • Patent number: 7906235
    Abstract: The invention relates to ionic compounds in which the anionic load has been delocalized. A compound disclosed by the invention includes an anionic portion combined with at least one cationic portion Mm+ in sufficient numbers to ensure overall electronic neutrality; the compound is further comprised of M as a hydroxonium, a nitrosonium NO+, an ammonium —NH4+, a metallic cation with the valence m, an organic cation with the valence m, or an organometallic cation with the valence m. The anionic load is carried by a pentacyclical nucleus of tetrazapentalene derivative bearing electroattractive substituents. The compounds can be used notably for ionic conducting materials, electronic conducting materials, colorant, and the catalysis of various chemical reactions.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: March 15, 2011
    Assignee: Hydro-Quebec
    Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Yves Choquette
  • Patent number: 7901812
    Abstract: The invention concerns novel ionic compounds with low melting point whereof the onium type cation having at least a heteroatom such as N, O, S or P bearing the positive charge and whereof the anion includes, wholly or partially, at least an ion imidide such as (FX1O)N?(OX2F) wherein X1 and X2 are identical or different and comprise SO or PF, and their use as solvent in electrochemical devices. Said composition comprises a salt wherein the anionic charge is delocalised, and can be used, inter alia, as electrolyte.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: March 8, 2011
    Assignees: ACEP Inc., Centre National de la Recherche Scientifique, Universite de Montreal
    Inventors: Christophe Michot, Michel Armand, Michel Gauthier, Nathalie Ravet
  • Patent number: 7879492
    Abstract: The present invention is concerned with novel compounds derived from polyquinonic ionic compounds and their use in electrochemical generators.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: February 1, 2011
    Assignees: ACEP Inc., Centre National de la Recherche Scientifique, Universite de Montreal
    Inventors: Michel Armand, Christophe Michot, Nathalie Ravet
  • Publication number: 20100297496
    Abstract: The invention relates to a process for the preparation of a carbon-treated complex oxide having a very low water content and to its use as cathode material. The carbon-treated complex oxide is composed of particles of a compound AMXO4 having an olivine structure which carry, on at least a portion of their surface, a film of carbon deposited by pyrolysis. A represents Li, alone or partially replaced by at most 10% as atoms of Na or K. M represents Fe(II), alone or partially replaced by at most 50% as atoms of one or more other metals chosen from Mn, Ni and Co, and/or by at most 10% as atoms of one or more aliovalent or isovalent metals other than Mn, Ni or Co, and/or by at most 5% as atoms of Fe(III). X4 represents PO4, alone or partially replaced by at most 10 mol % of SO4 and SiO4. Said material has a water content <1000 ppm.
    Type: Application
    Filed: October 30, 2007
    Publication date: November 25, 2010
    Inventors: Nathalie Ravet, Michel Gauthier, Thorsten Lahrs, Guoxian Liang, Christophe Michot