Bathium Canada Inc.

Blue Solutions Canada Inc.

Johnson Matthey Public Limited Company

Clariant Corporation

Phostech Lithium Inc.

Johnson Matthey Battery Materials Ltd.

Frederic Cotton

Patrick Leblanc

Alain Vallee

Cedric Reboul-Salze

Thierry Guena

Dave Lessard

Michel Gauthier

Nathalie Ravet

Marc Deschamps

Guoxian Liang

Michel Parent

Vincent Bodenez

Thorsten Lahrs

Denis Geoffroy

Pierre Sirois

Philippe Bernardo

Mathieu Dru

Edison Men

Thomas Calvez

Jean-Luc Monfort

Alan VALLÉE

Cédric Reboul-Salze

Alain VALLÉE

Alan Vallee

A lithium metal battery is disclosed. The lithium battery comprising a Li metal anode, a cathode and an electrolyte in between the Li metal anode and the cathode wherein the electrolyte includes immobilized anions at least at the interface between the Li metal anode and the electrolyte to maintain the anionic concentration at the interface above zero throughout the charge-discharge cycles thereby preventing surface potential instability at the interface of the Li metal anode and electrolyte.

Lithum metal battery

Lithium metal battery

A lithium battery comprising a plurality of electrochemical cells assembled together and a rigid casing forming an enclosure. The plurality of electrochemical cells includes: at least one first electrochemical cell, at least one second electrochemical cell; and at least one third electrochemical cell disposed between the at least one first electrochemical cell and the at least one second electrochemical cell. The at least one first electrochemical cell is disposed between a first wall of the casing and the at least one third electrochemical cell. The at least one second electrochemical cell is disposed between a second wall of the casing and the at least one third electrochemical cell. The first and second walls provide a heat sink path to dissipate excess heat generated by the plurality of electrochemical cells. The at least one first and second electrochemical cells are more capacitive than the at least one third electrochemical cell.

Battery with variable electrochemical cells configuration

A lithium battery comprising a plurality of electrochemical cells assembled together, the electrochemical cells assembled with electrochemical cells of different characteristics to compensate the heat loss through heat sinks in the battery.

Battery with electrochemical cells having variable impedance

The invention disclosed is a method for decreasing the internal resistance or impedance of a battery or electrochemical cell is described which comprises the step of discharging the battery or cell until it reaches an overdischarge condition and maintaining the battery or cell in the overdischarge condition for a period of time sufficient to effect a diminution of the internal resistance or impedance of a battery or electrochemical cell; and a battery or electrochemical cell having a reduced impedance.

Electrochemical cell or battery with reduced impedance and method for producing same

A volatile methyl siloxane lubricant for use in the process of laminating lithium sheets into lithium films is disclosed.

Lubricant for lamination of lithium sheets into lithium thin films

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

An electrochemically active material is disclosed in which the particles of electrochemically active material have a zeta potential of less than 25 mV in absolute value (&#x2212;25 mV to 0 mV; 0 mV to 25 mV) as measured in the medium (water and/or organic solvent) in which the particles are dispersed.

Electrode material for lithium electrochemical cells

A process for making an electrode sheet for lithium electrochemical cells is disclosed. The process comprises the steps of: a) admixing a polyether polymer or copolymer soluble in water, at least one lithium salt, at least one electrochemically active material, water and an organic solvent miscible with water in a water/organic solvent ratio of a maximum of 50% organic solvent by volume to form a water-based solution/suspension containing by weight at least 20% active electrode material, at least 5% of a polyether polymer or copolymer, and at least 1.5% lithium salt; b) coating the water-based solution/suspension in the form of an electrode thin film onto an electrode support; and, c) drying the electrode thin film to obtain an electrode thin sheet having less than 1000 ppm of residual water.

Process for making electrodes for lithium based electrochemical cells

An electrode and an electrode material for lithium electrochemical cells are disclosed. The electrode material is in powder form and has a particle size distribution wherein the measured particle size distribution of the electrode material has a median size Dranging from 1.5 &#x3bc;m and 3 &#x3bc;m, a D&#x2267;0.5 &#x3bc;m, a D&#x2266;10.0 &#x3bc;m, and a calculated ratio (D/D)/D&#x2267;3.0 which is indicative of a peak of the measured particle size distribution on the left of the median Dwhich improves the loading and energy density of the electrode produced with this electrode material powder.

Electrodes and electrode material for lithium electrochemical cells

A process for making an electrode sheet for a solid lithium electrochemical cells is disclosed. The process comprises the steps of: a) admixing a polyether polymer or copolymer, at least one lithium salt, at least one electrochemically active material and purified water to form an aqueous solution/suspension containing by weight at least 40% purified water, at least 20% active electrode material, up to 10% electrically conductive material, at least 5% polyether polymer or copolymer, and at least 1.5% lithium salt; b) coating the aqueous solution/suspension in the form of an electrode thin film onto an electrode support; and, c) evaporating the water from the electrode thin film to obtain an electrode sheet having less than 1000 ppm of residual water. The evaporation step is preferably carried out through a dryer/oven tunnel having incremental drying zones.

Growing community of inventors

Montreal, Canada

Frederic Cotton