Universitéde Montreal

Centre National De La Recherche Scientifique

Acep Inc.

Cnrs

Hydro-quebec

Phostech Lithium Inc.

Other

Johnson Matthey Public Limited Company

Bathium Canada Inc.

University De Montreal

Clariant (canada) Inc.

Scientifique (cnrs)

Centre De La Recherche Scientifique

Clariant Corporation

Centre National De La Recherche Scientifique-cnrs

Nathalie Ravet

Michel Armand

Michel Gauthier

Christophe Michot

Martin Simoneau

Simon Besner

Alain Vallee

Laurent Gauthier

Donald Lavoie

Jean-François Magnan

Guoxian Liang

Alain Vallée

Denis Geoffroy

Patrick Leblanc

Pierre Hovington

Frederic Cotton

Michel Parent

Jasmin Dufour

Thorsten Lahrs

Jean-Fancois Magnan

Michel Gauhtier

Alain VALLÉE

The present invention is concerned with novel compounds derived from polyquinonic ionic compounds and their use in electrochemical generators.

Electrode materials derived from polyquinonic ionic compounds and their use in electrochemical generators

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

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

The present invention concerns electrode materials capable of redox reactions by electron and alkali-ion exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, supercapacitors and light modulating systems of the electrochromic type.

Electrode materials with high surface conductivity

The present invention concerns electrode materials capable of redox reactions by electrons and alkali ions exchange with an electrolyte. The applications are in the field of primary (batteries) or secondary electrochemical generators, super capacitors and light modulating system of the super capacitor type.

A process for preparing an at least partially lithiated transition metal oxyanion-based lithium&#x2212;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.

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 (FXO)N(OXF) wherein Xand Xare 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.

Growing community of inventors

Montreal, Canada

Nathalie Ravet