Blue Solutions

Centre National De La Recherche Scientifique

Batscap

Université De Nantes

Institut Polytechnique De Grenoble

Université´ D'aix-marseille

Bathium Canada Inc.

Electricite De France

Aix-marseille Université

Marc Deschamps

Dominique Guyomard

Joël Gaubicher

Margaud Lecuyer

Bernard Lestriez

Matthieu Dubarry

Renaud Bouchet

Philippe Poizot

Benoit Morel

Vincent Bodenez

Jean-Yves Sanchez

Fannie Alloin

Philippe Bernardo

Christophe Chauvin

Alain Vallee

Didier Gigmes

Patrick Leblanc

Frederic Cotton

Cristina Iojoiu

Stéphane Lascaud

Cedric Reboul-Salze

Thierry Guena

François Tanguy

Francois Tanguy

Philippe J Moreau

Patrick Soudan

Julien Rolland

Phan Trang

Adèle Ferrand

Adrien Lassagne

Ekaterina Pavlenko

Mathieu Dru

Thomas Calvez

Nelly Bourgeon

Annie Le Gal La Salle

Séverine Jouanneau

Philippe Moreau

Delphine Guy

Stéphane Kerdranvat

Sophie Madray

Alain Verbaere

Cédric Reboul-Salze

Frédéric Cotton

Frederick Cotton

Severine Jouanneau

Christina Iojoiu

A cross-linked copolymer is provided, including at least repeating units of poly(alkylene oxide) and at least repeating units of lithium polystyrene-sulfonyl(trifluoromethylsulfonyl)imide (PSTFSILi), as well as the use of such a cross-linked copolymer for preparing a solid polymer electrolyte, a solid polymer electrolyte having the cross-linked copolymer, and a battery, for example a lithium metal polymer (LMP) battery, including the solid polymer electrolyte.

Polymer electrolyte for a lithium metal polymer battery having improved performance

The invention relates to a solid polymer electrolyte for a battery comprising at least one polymer which solvates the cations of a lithium salt, at least one lithium salt and at least one specifically selected halogenated polymer, and also to the lithium batteries comprising such a solid polymer electrolyte, in particular LMP batteries.

Solid polymer electrolyte including solvating polymer, lithium salt, and PVdF-HFP copolymer and battery including same

The invention relates to the use of lithium nitrate as sole lithium salt providing the ion conductivity in a gelled rechargeable lithium metal battery not comprising polysulfide ions, for improving its lifetime.

Use of lithium nitrate as sole lithium salt in a gelled lithium battery

The invention relates to the simultaneous use of a first salt comprising a nitrate anion (NO) and a second salt comprising an anion other than nitrate, at least one of the first and second salts being a lithium salt, as ionic conductivity promoters in a rechargeable lithium-metal-gel battery. The invention also relates to a lithium-gel battery comprising a mixture of said first salt and said second salt, to a non-aqueous gel electrolyte comprising such mixture and to a lithium battery positive electrode comprising said mixture.

Use of a salt mixture as an additive in a lithium-gel battery

The present invention relates to a high energy density lithium metal polymer (LMP) battery comprising a positive electrode that includes a high potential positive electrode active material and a block copolymer of AB or BAB type, A being an ethylene oxide block and B being an anionic polymer block based on lithium bis(trifluoromethylsulfonyl)imide.

Lithium metal polymer battery having a high energy density

The present invention relates to the field of organic lithium batteries having high energy and power densities. In particular, the present invention relates to an organic lithium battery comprising a positive electrode based on redox organic compounds and a porous separator made of biaxially oriented polypropylene, and to its process of manufacture.

Organic lithium battery

Organic lithium batteries are provided having high energy and power densities with a positive electrode based on redox organic compounds and an electrolyte having a high concentration of lithium salt.

The present invention concerns a positive electrode including a composite material including sulfur and carbon as an active material and its method of manufacture, a lithium-sulfur battery including such a positive electrode and its method of manufacture.

Lithium-sulfur battery

The invention relates to a lithium battery, the operation of which is security-protected by the interposition of resilient films. The battery is made up of a battery cell PEN, which comprises a film of an electrolyte E containing a lithium salt between a film P forming a positive electrode and a film N forming a negative electrode, or made up of a stack of battery cells PEN, said stack comprising two terminal battery cells between which are optionally placed one or more intermediate battery cells, said battery being characterized in that it comprises at least two protective films Fp made of a resilient material, at least one of the electrodes of the battery cell or of each terminal battery cell being in contact with a protective film Fp made of a resilient material. In particular, at least two protective films Fp are made of a resilient material having an elongation at break denoted by aand a thickness denoted by e, at least one of said protective films Fp in contact with a connection layer, for connecting an electrode, having a thickness e, said film having a thickness esuch that e&#x3e;e/a. The invention relates to 'lithium' batteries, the negative electrode of which is made of lithium metal, and to 'lithium ion' batteries, the negative electrode of which comprises a lithium-ion insertion material.

Lithium battery protected from intrusion by pointed elements

The present invention relates to the field of lithium-sulphur batteries having high energy and power densities. In particular the present invention relates to a lithium-sulphur battery comprising a porous separator made of biaxially oriented polypropylene and to its process of manufacture.

Lithium-sulphur battery

The present invention concerns a composite positive electrode for a lithium battery, in particular a lithium-metal polymer (LMP) battery, the use of same for producing an LMP battery and an LMP battery comprising same.

Positive electrode for a lithium battery

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

The present invention relates to a method for preparing a positive electrode that is made up of a composite material containing at least one active positive electrode made of iron and phosphate and at least one water-soluble polymer having ionic conduction properties in the presence of a lithium salt, said method comprising at least one step for mixing ingredients of the composite material through extrusion so as to obtain an extruded composite material and wherein said extrusion step is carried out by means of a co-kneader or extruder in the presence of an aqueous solvent and at a temperature from 20&#xb0; to 95&#xb0; C. The invention also relates to the positive electrode obtained according to said method, to the use of said electrode for manufacturing a lithium battery, and to the lithium battery having such electrode built therein. The electrode is particularly characterized in that it contains a level of active material greater than 60 wt %.

Method for preparing a positive electrode material through extrusion in presence of an aqueous solvent, positive electrode obtained through said method, and uses thereof

The invention relates to a lithium vanadium oxide which corresponds to the formula LiVO(0.1&#x2266;&#x3b1;&#x2266;0.25). It is composed of agglomerates of small needles having a length l from 400 to 1000 nm, a width w such that 10&#x3c;l/w&#x3c;100 and a thickness t such that 10&#x3c;l/t&#x3c;100. It is obtained by a process consisting in preparing a precursor gel by bringing &#x3b1;-VOand a Li precursor into contact in amounts such that the ratio of the concentrations [VO]/[Li] is between 1.15 and 1.5 and in subjecting the gel to a heat treatment comprising a first stage at 80&#xb0; C.-150&#xb0; C. for 3 h to 15 days and a second stage between 250&#xb0; C. and 350&#xb0; C. for 4 min to 1 hour, under a nitrogen or argon atmosphere. It is useful as an active material of a positive electrode.

[object Object]

The invention relates to the development of an electrochemical device including a lithium salt/polyether electrolyte film between two films forming the cathode and the anode, respectively. The method of the invention involves assembling a multilayer structure consisting of the current-collecting carrier, the cathode-forming film, the electrolyte-forming polyether film and the anode-forming film. The cathode and/or anode films are made of a composite material containing the lithium salt. The polyether film is lithium salt-free. The assembled device is allowed to rest for long enough to enable the lithium salt in the cathode and/or the anode to be dispersed throughout the polymer film.

Method for developing an electrochemical device

Growing community of inventors

Quimper, France

Marc Deschamps