Hydro-quebec

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Universitéde Montreal

Societe Nationale Elf Aquitaine

Centre National De La Recherche Scientifique

Johnson Matthey Public Limited Company

Acep Inc.

3m Innovative Properties Company

Cnrs

La Corporation De L'ecole Polytechnique De Montreal

Bathium Canada Inc.

Minnesota Mining and Manufacturing Company

Clariant Corporation

Centre National De La Recherche Scientifique-cnrs

Université Du Québec À Montréal

Michel Gauthier

Michel Armand

Christophe Michot

Yves Choquette

Nathalie Ravet

Karim Zaghib

Michel Bernard Armand

Andre Belanger

Abdelbast Guerfi

Daniel Muller

Alain Vallee

Fernand Brochu

Simon Besner

Guoxian Liang

Laurent Gauthier

Donald Lavoie

Patrick Bouchard

Roger Rouillard

Guy St-Amant

Monique Masse

Guy Vassort

Michael K Domroese

Joseph Andrew Hoffman

Jean-Yves Sanchez

Patrick Charest

Jennifer L Trice

Michel Perrier

Martin Dontigny

Jean Rouillard

David D Lindeman

Vern E Radewald

Paul-Emile Guerin

Jean-Fran&ccedil;ois Magnan

Philippe Ricoux

Toshimi Shiota

Michel Robitaille

Paul-Etienne Harvey

Jasmin Dufour

Jocelyn Jalbert

Joseph-Robert-Gaetan Noel

Estelle Potvin

Andr&eacute; B&eacute;langer

Andre M Chamberland

Denis Fauteux

Patrice Chartrand

Hugues Hamelin

Ginette Lessard

Denis Geoffroy

James K Jacobs

Jean-François Magnan

Thomas A Turgeon

Anthony Sudano

Patrick Leblanc

Martin Simoneau

Michel Ranger

Frederic Cotton

Pierre Hovington

Elisabeth Dupuis

Alan Paul Miller

Jean-Michel Chabagno

Michel Petitclerc

Michel Parent

Philippe St-Germain

Bruno Kapfer

Thorsten Lahrs

Sylvain Poirier

Philippe Rigaud

Dean MacNeil

Joseph-Robert-Ga&eacute;tan No&euml;l

Alain Vall&eacute;e

Roger Bellemare

Steen Brian Schougaard

Christian Kuss

David Lepage

Real Boissonneault

Serge Ricard

Marc Poirier

Majid Talebi-Esfandarani

Pierre Sauriol

Gabrielle Nadeau

Mickael Dollé

Monique Massé

André Bélanger

Joseph Wontcheu

Gaston Dussault

Paul-&Eacute;tienne Harvey

Gaston Dusseault

A method for preparing a multilayer material based on active lithium, by depositing a film of active lithium on a protective layer at a sufficient speed so that substantially no oxidation of the lithium occurs, and/or during a sufficient time for the adhesion of the lithium to develop after contact with the protective layer. The multilayer material, when incorporated in an electrochemical battery as an anode, has excellent impedance stability and no formation of dendrites during the cycling. Batteries where the anode is the multilayer material are particularly efficient in terms of their coulombic efficiency.

Multilayer material based on active lithium, method of preparation and applications in electrochemical generators

Process for the purification of an ionic electrolyte including at least one alkali metal salt, the process having at least one stage in which particles of at least one calcium salt are brought into contact. The process makes it possible to obtain electrolytes characterized in particular by particularly low water content. The corresponding electrochemical generators which incorporate the electrolyte as constituent component are characterized by a noteworthy stability and are particularly safe.

Electrolyte purification method using calcium carbide, and electrolytes thus obtained

Synthesis process for new particles of LiTiO, LiZTiOor LiZTiO, preferably having a spinel structure, wherein &#x3b2; is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), &#x3b1; representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.

LiTiO, LiZTiOor LiZTiO, particles, processes for obtaining same and use as electrochemical generators

There is provided a process for producing LiMXO, comprising the steps of reacting a source of lithium, a source of M, and a source of X together, in a melted state at a reaction temperature between 900 to 1450 C, in the presence of an excess of (A) a solid-solid reducing couple having an oxygen partial process at equilibrium (pO) comprised between 10and 10atm at said reaction temperature according to an Ellingham-Richardson diagram for oxides, or (B) one component of the solid-solid reducing couple together with a gas-gas reducing couple having an oxygen partial pressure equilibrium (pO) between 10and 10atm at said reaction temperature according to an Ellingham-Richardson diagram of oxides, and under thermic equilibrium and thermodynamic equilibrium. There is also provided a LiMXOmelt-solidified product free from off-composition impurities.

Processes for producing LiMXOand products thereof

A method for preparing an electrode material, said material comprising complex oxide particles having a non-powdery conductive carbon deposit on at least part of their surface, said method comprising: grinding into nanometer size complex oxide particles or particles of complex oxide precursors, wherein the grinding is performed in a bead mill on particles dispersed in a carrier solvent, adding an organic carbon precursor to the oxide particles or oxide precursor particles before, during or after said grinding, and pyrolysing the mixture thus obtained, selecting the size of the particles to grind, the size of the beads used to grind, and the size of the resulting particles such that: 0.004&#x3c;MS(SP)/MS(B)&#x3c;0.12 and 0.0025&#x3c;MS(FP)/MS(SP)&#x3c;0.25, wherein MS(SP) represents the mean size diameter of the particles before grinding, MS(FP) represents the mean size diameter of the particles after grinding, and MS(B) is the mean size diameter of the beads.

Method for preparing a particulate cathode material

Process for the purification of an ionic electrolyte comprising at least one alkali metal salt, the process having at least one stage in which particles of at least one calcium salt are brought into contact. The process makes it possible to obtain electrolytes characterized in particular by a particularly low water content. The corresponding electrochemical generators which incorporate the electrolyte as constituent component are characterized by a noteworthy stability and are particularly safe.

There is provided a process for preparing a crystalline electrode material, the process comprising: providing a liquid bath comprising the electrode material in a melted state; and introducing a precursor of the electrode material into the liquid bath, wherein the electrode material comprises lithium, a metal and phosphate. There is also provided a crystalline electrode material, comprising lithium substituted by less than 0.1 atomic of Na or K; Fe and/or Mn, substituted by less than 0.1 atomic ratio of: (a) Mg, Ca, Al and B, (b) Nb, Zr, Mo, V and Cr, (c) Fe(III), or (d) any combinations thereof; and PO, substituted by less than 20% atomic weight of an oxyanion selected from SO, SiO, BO, PO, and any combinations thereof, the material being in the form of particles having a non-carbon and non-olivine phase on at least a portion of the surface thereof.

Process for preparing crystalline electrode materials and materials obtained therefrom

[object Object]

A material C-AM(XO)that is of particles of a compound of the formula AM(XO), wherein said particles include a carbon deposit deposited by means of pyrolysis on at least a portion of the surface thereof, and where: A is Li alone or partially replaced by at most 10 atomic % of Na or K; M is Fe(II), or Mn(II), or mixtures thereof alone or partially replaced by at most 30 atomic % of one or more metals selected from Mn, Ni and Co and/or at most 5% of Fe(III); XOis POalone or partially replaced by at most 10 molar % of at least one group selected from SO, SiOand MoO; and where said material has a calcium impurity content of lower than about 1000 ppm.

Procedure to optimize materials for cathodes and cathode material having enhanced electrochemical properties

Synthesis process for new particles of LiTiO, LiZTiOor LiZTiO, wherein &#x3b2; is &#x3e;0 and &#x2266;0.5, &#x3b1; is a number &#x3e;0 and &#x2266;0.33, Z is a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators. The process may involve the steps of a) preparing a dispersion of a mixture of TiO&#x2014;LiY-carbon, wherein x is a number between 1 and 2, z is 1 or 2, and Y is a radical chosen among CO, OH, O and TiOor a mixture thereof; and 2) heating of the dispersion, preferably to a temperature of between about 400&#xb0; C. and about 1000&#xb0; C.

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.

Polymers obtained from monomers allowing a sequential polymerization, and their use for preparing ionic conductors

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.

Process to induce polymerization of an organic electronically conductive polymer

A process for preparing an alkali metal oxyanion electrode material having a carbon coating deposited by a thermal treatment, said process comprising a thermal step under a humidified atmosphere of: (i) said alkali metal oxyanion electrode material having a carbon coating deposited by a thermal treatment; (ii) precursors of said alkali metal oxyanion electrode material and an organic precursor of carbon; or (iii) said alkali metal oxyanion electrode material and an organic precursor of carbon, wherein said thermal step is performed at a temperature in the range of about 300&#xb0; C. to about 950&#xb0; C.

Method for heat treating a carbon coated alkali metal oxyanion electrode material

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&#x2014;(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.

Materials useful as electrolytic solutes

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.

Process for preparing electroactive insertion compounds and electrode materials obtained therefrom

Growing community of inventors

La Prairie, Canada

Michel Gauthier