Centre National De La Recherche Scientifique

Hydro-quebec

Institut National Polytechnique De Grenoble

Commissariat a L'energie Atomique

Other

Solvay Sa

Institut Polytechnique De Grenoble

Rhodia Chimie

Universite Claude Bernard – Lyon1

Saint-gobain Vitrage International

Université Joseph Fourier

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique-cnrs

Blue Solutions

Westfalische Wilhelms-universität Münster

Jean-Yves Sanchez

Fannie Alloin

Michel Bernard Armand

Michel Armand

Cristina Iojoiu

Salime Sylla

Yves Choquette

Christophe Michot

Michel Gauthier

Marc Deschamps

Sébastien Martinet

France Chabert

Nadia El Kissi

Régis Mercier

Paul-Etienne Harvey

Christophe Chauvin

Bernard Langlois

Stefano Passerini

Herve Galiano

Lucile Gambut-Garel

Hervé Galiano

Regis Mercier

Yves Piffard

Carroll Vergelati

Michel Paillet

Helene Lignier

Daniel Baril

Marco Bolloli

Dominic Bresser

Jean-Claude Lepretre

Djamila Benrabah

Alain Deronzier

Hélène Lignier

Jacqueline Masson

Glaura Goulart Silva

Jean-Pierre Petit

Fabien Toulgoat

Christiane Poinsignon

Veronica De Zea Bermudez

Daniel Deroo

Claire Antonelli

Damien Djian

Yannick Molmeret

Manuel Marechal

Amadou Thiam

Elie Paillard

Maurice Medebielle

Thibault Godet-Bar

Crístina Iojoiu

Jérèmie Salomon

Jean-Yves Cavaille

Alain Dufresne

Olesia Danyliv

My Ahmed Said Azizi Samir

Jérémie Salomon

Cristina Iojou

Christina Iojoiu

My Ahmed Azizi Samir

Julian Kalhoff

Ionically conductive materials that can be used in electrochemical generators. A new ionically conductive material usable in an electrochemical generator, for example in separators, solid polymer electrolytes or electrodes, has good mechanical properties and good ionic conductivity and is able to prevent dendritic growth in lithium batteries. The material comprises at least one polymer A, different from B, having an ionic conductivity of between 10and 10S/cm, at least one polymer B having mechanical strength characterised by a storage modulus &#x2265;200 MPa and at least one reinforcing filler C.

Ionically conductive material for electrochemical generator and production methods

The invention relates to a process for preparing unipolar cation-conducting ionomers from fluoro ionic monomers, to said unipolar cation-conducting ionomers, to the uses thereof, to an electrolytic composition comprising at least one of said unipolar cation-conducting ionomers and to an electrochemical device comprising at least one of said unipolar cation-conducting ionomers, especially as electrolyte.

Process for preparing unipolar cation-conducting ionomers from difluoro ionic monomers

A rechargeable metal ion cell comprising: an anode comprising at least one metal; a charge-carrying electrolyte comprising a charge carrying medium and at least one metal salt; and an organic polymer cathode, wherein such cathode comprises at least one N-substituted polyphenothiazine polymer [polymer (P)], such polymer (P) comprising at least one N-substituted phenothiazine recurring unit of formula: wherein R' is an electron-withdrawing group comprising at least one heteroatom selected from the group consisting of O, S, P, and N.

Rechargeable metal or metal-ion cell

The invention relates to a process for preparing aromatic sulfonylimides, to the sulfonylimides obtained, and to the use thereof as salt of an electrolyte. The sulfonylimides correspond to the formula [R&#x2014;SO&#x2014;N&#x2014;SOR']M (I). R&#x2032; is an ArZL- group. R&#x2032; is a perfluoroalkyl group or an ArZL- group. Z is an S, SO or SOgroup. L is a &#x2014;(CF)&#x2014;CFR&#x2014; group. n is 0 or 1; Rrepresents F or a Cto Cperfluoroalkyl group; Ar is an aromatic group. M represents H, an alkali metal cation, an alkaline earth metal cation, a trivalent or tetravalent metal cation, or an organic cation. The process consists in preparing a compound RSO2N(R&#x2032;)SO2R&#x2032; from RSOF, and in replacing the group R&#x2032; by nucleophilic substitution reaction so as to obtain the compound (I), R&#x2032; being a benzyl or trimethylsilyl group.

Aromatic sulfonylimides, preparation thereof and use thereof as electrolyte

The invention relates to the preparation of a crosslinked polymeric film bearing ionic groupings. The process consists in extruding a material comprising at least one prepolymer, in polymerizing said material after extrusion, and in subjecting the extruded material to a chemical reaction for grafting ionic groupings. The prepolymer comprises repeating units each comprising at least one aromatic group GA and at least one functional group GF; it bears at least one group GP which is polymerizable thermally at a temperature greater than the extrusion temperature, or photochemically, and also at least one reactive group GR which allows the grafting of ionic groupings. The films are useful as a membrane for fuel cells or electrodialysis, as an electrolyte of a lithium battery, of a supercapacitor or of an electrochromic device, or as an ion exchange membrane.

Crosslinked polymer film bearing ionic groupings

The invention relates to a copolymer of ethylene oxide or propylene oxide and at least one substituted oxirane bearing an ionic group. The copolymer is characterized in that its chain comprises repeat units &#x2014;O&#x2014;CH&#x2014;CH(&#x2014;CH&#x2014;O&#x2014;SOLi)&#x2014;, repeat units &#x2014;O&#x2014;CH&#x2014;CHR&#x2014; in which R is H or CH, optionally, repeat units &#x2014;O&#x2014;CH&#x2014;CH(&#x2014;CHR')&#x2014; in which R&#x2032; is a functional group. x

Copolymer of propylene or ethylene oxide and of an oxirane bearing an ionic group

The invention relates to a solid ionic conducting material which can be used as an electrolyte or as a component of a composite electrode. The material comprises a polymer matrix, at least one ionic species and at least one reinforcing agent. The polymer matrix is a solvating polymer optionally having a polar character, a non-solvating polymer carrying acidic ionic groups, or a mixture of a solvating or non-solvating polymer and an aprotic polar liquid. The ionic species is an ionic compound selected from salts and acids, said compound being in solution in the polymer matrix, or an anionic or cationic ionic group fixed by covalent bonding on the polymer, or a combination of the two. The reinforcing agent is a cellulosic material or a chitin.

Reinforced ionic conducting material, use thereof in electrodes and electrolytes

The invention relates to a process for the extrusion of thermoplastic polymers having alkaline ionic groups. The process consists in preparing a mixture composed of a thermoplastic polymer having alkaline ionic groups and a plasticizer, in extruding the mixture obtained to form a film; then in washing the film obtained in aqueous medium to remove said plasticizer(s). The plasticizer is chosen from non-volatile compounds which are stable with respect to the ionic groups of the polymer, which are soluble in water or in solvents that are miscible with water, said plasticizers being chosen from the compounds that react with the ionic group of the polymer via formation of a weak bond of the hydrogen bond-type, and the compounds that react with the ionic group of the polymer via formation of a strong bond, of the ionic bond-type.

Membrane preparation method comprising the extrusion of a thermoplastic polymer bearing alkaline groupings

The invention relates to an ion-conducting material containing an oligoether sulfate. The material comprises an ionic compound dissolved in a solvating polymer. The ionic compound is a mixture of a lithium bis(trifluoromethanesulfonyl)imide and of at least one lithium oligoether sulfate chosen from the lithium oligoether monosulfates corresponding to the formula R&#x2014;[O&#x2014;CH&#x2014;CH)]&#x2014;O&#x2014;SOLi(I) in which R is a group CHwith 1&#x2266;m&#x2266;4 and 2&#x2266;n&#x2266;17, and the lithium oligoether disulfates corresponding to the formula LiOSO&#x2014;O&#x2014;CH&#x2014;[CH&#x2014;O&#x2014;CH]&#x2014;CH&#x2014;O&#x2014;SO&#x2014;OLi(II) in which 3&#x2266;p&#x2266;45; the overall ratio O/Liis less than or equal to 40, Orepresenting the total number of O atoms provided by the solvating polymer and by the oligoether; the content of LiTFSI is such that the O/LiTFSI ratio is greater than or equal to 20.

Ionic conducting material containing an oligoether sulphate

The invention relates to a process for the extrusion of thermoplastic polymers having acid ionic groups. The process consists in preparing a mixture composed of a thermoplastic polymer having acid ionic groups and a plasticizer, in extruding the mixture obtained to form a film, then in washing the film obtained in aqueous medium to remove said plasticizer(s). The plasticizer is chosen from non-volatile compounds which are stable with respect to the ionic groups of the polymer, which are soluble in water or in solvents that are miscible with water, said plasticizers being chosen from the compounds that react with the ionic group of the polymer via formation of a weak bond of the hydrogen bond-type, and the compounds that react with the ionic group of the polymer via formation of a strong bond, of the ionic bond-type.

Extrusion of a thermoplastic polymer bearing acid ionic groupings

The field of the present invention relates to the field of batteries and of polymer electrolytes for batteries and more particularly to the field of lithium batteries. The invention relates to a composition which can be polymerized and/or crosslinked photochemically or under an electron beam for a battery electrolyte comprising:

Cross-linkable composition for a battery electrolyte

A separator for a battery in lithium. The separator is a thick membrane, of around 60 to 120 &#x3bc;m in polyvinylidene fluoride copolymer, which has considerable porosity, of around 50 to 90%, with pores of size between 1 and 10 &#x3bc;m. With these characteristics, it is possible to optimize the operation of a battery with an electrode in, e.g., LiTiO, in particular for rapid charges and discharges, in other words in power applications.

Polymer separator for a lithium battery

The invention concerns a copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function. The copolymer comprises ethylene oxide, &#x2014;O&#x2014;CH&#x2014;CHR&#x2014; units in which R is a substituent containing a reactive function which is cross-linkable by free radical process, R may be different from one unit to the other, and possibly &#x2014;O&#x2014;CH&#x2014;CHR'&#x2014; units in which R&#x2032; is a substituent containing no reactive function which is cross-linkable by means of a free radical process, R&#x2032; may be different from one unit to the other. It is characterized by an excellent polymolecularity index I=Mw/Mn and a statistical distribution of the different monomer units. The copolymer is prepared by an anionic copolymerization process. The copolymer is useful for preparing a solid electrolyte having good mechanical properties, a good cationic conductivity and a good chemical compatibility with the electrodes of a generator operating with alkali metals such as lithium and sodium.

Copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function, process for preparation thereof and use thereof for producing materials with ionic conduction

The invention concerns a copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function. The copolymer comprises ethylene oxide, &#x2014;O&#x2014;CH&#x2014;CHR&#x2014; units in which R is a substituent containing a reactive function which is cross-linkable by free radical process, and possibly &#x2014;O&#x2014;CH&#x2014;CHR'&#x2014; units in which R&#x2032; is a substituent containing no reactive function which is cross-linkable by means of a free radical process, It is characterized by an excellent polydispersity index I=M/Mn and a random distribution of the different monomer units. The copolymer is prepared by an anionic copolymerization process. The copolymer is useful for preparing a solid electrolyte having good mechanical properties, a good cationic conductivity and a good chemical compatibility with the electrodes of a generator operating with alkali metals such as lithium and sodium.

Copolymer of ethylene oxide and at least one substituted oxirane carrying a cross-linkable function, process for preparation thereof, and use thereof for producing ionically conductive materials

Ionic conducting material having good anticorrosive properties

Growing community of inventors

Saint Ismier, France

Jean-Yves Sanchez