Abstract: The present invention relates to an electrode made of a lithium active ceramic material, without polymer binders and with a thickness more than 50 ?m, to the method for manufacturing same, and to the use thereof in rechargeable batteries.

Abstract: 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 10?5 and 10?3 S/cm, at least one polymer B having mechanical strength characterised by a storage modulus ?200 MPa and at least one reinforcing filler C.

Abstract: 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.

Abstract: The invention relates to ionically conductive materials that can be used in electrochemical generators. The aim of the invention is to provide a new ionic ally conductive material that can be used 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. Said material comprises: 1. at least one polymer A, different from B, having an ionic conductivity of between 10?5 and 10?3 S/cm, 2. at least one polymer B having mechanical strength characterised by a storage modulus ?200 MPa, for example of between 200 and 5000 MPa or between 350 and 1500 MPa; and 3. at least one reinforcing filler C. The invention also relates to films based on said type of material and to methods for the synthesis of said films.

Abstract: The present invention relates to an electrode made of a lithium active ceramic material, without polymer binders and with a thickness more than 50 ?m, to the method for manufacturing same, and to the use thereof in rechargeable batteries.

Abstract: 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.

Abstract: The present invention relates to an electrolyte solution comprising an electrolyte salt and an electrolyte solvent, wherein the electrolyte solvent comprises a fluorinated acyclic dialkyl carbonate, preferably an n-fluoro diethyl carbonate according to formula (1) as follows: C2H5-xFx—CO3C2H5-yFy (1) wherein 1?x?5 and 0?y?5; in an amount in the range of ?10 wt % to ?100 wt %, referring to a total amount of the electrolyte solvent of 100 wt %, and the use of such fluorinated acyclic dialkyl carbonates for the prevention or suppresion of aluminum current collector corrosion in an alkali or alkaline earth metal-based electrochemical energy storage device, particularly in a lithium-ion battery or lithium polymer battery containing an electrolyte solution comprising an alkali or alkaline earth metal sulfonimide or sulfonmethide salt.

Abstract: 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.

Abstract: 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—SO2—N—SO2R?]rM (I). R? is an ArZL- group. R? is a perfluoroalkyl group or an ArZL- group. Z is an S, SO or SO2 group. L is a —(CF2)n—CFRf— group. n is 0 or 1; Rf represents F or a C1 to C8 perfluoroalkyl 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?)SO2R? from RSO2F, and in replacing the group R? by nucleophilic substitution reaction so as to obtain the compound (I), R? being a benzyl or trimethylsilyl group.

Abstract: 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.

Abstract: 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.

Abstract: 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 —O—CH2—CH(—CH2—O—SO3?Li+)—, repeat units —O—CH2—CHR— in which R is H or CH3, optionally, repeat units —O—CH2—CH(—CH2R?)— in which R? is a functional group. x Uses: electrolyte in electrochemical, selective-membrane and reference-membrane devices.

Abstract: 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.

Abstract: 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.

Abstract: 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—[O—CH2—CH2)]n—O—SO3?Li+(I) in which R is a group CmH2m+1 with 1?m?4 and 2?n?17, and the lithium oligoether disulfates corresponding to the formula Li+O?SO2—O—CH2—[CH2—O—CH2]p—CH2—O—SO2—O?Li+(II) in which 3?p?45; the overall ratio Ot/Lit is less than or equal to 40, Ot representing the total number of O atoms provided by the solvating polymer and by the oligoether; the content of LiTFSI is such that the Ot/LiTFSI ratio is greater than or equal to 20.

Abstract: 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.

Abstract: The invention relates to a process for preparing aromatic sulphonylimides, to the sulphonylimides obtained, and to the use thereof as salt of an electrolyte. The sulphonylimides correspond to the formula [R—SO2—N—SO2R?]rM (I). R? is an ArZL- group. R? is a perfluoroalkyl group or an ArZL- group. Z is an S, SO or SO2 group. L is a —(CF2)n—CFRf— group. n is 0 or 1; Rf represents F or a C1 to C8 perfluoroalkyl 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?)SO2R? from RSO2F, and in replacing the group R? by nucleophilic substitution reaction so as to obtain the compound (I), R? being a benzyl or trimethylsilyl group.

Abstract: 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: (a) at least one polyorganosiloxane (POS) (A) comprising, per molecule at least 2 siloxyl units carrying radicals comprising an epoxy (Epx) functional group with optionally an ether (Eth) functional group, and at least one of the siloxyl units carries a polyoxyalkylene (Poa) ether radical; (b) at least one electrolyte salt ; and (c) an effective amount of at least one cationic photoinitiator.

Abstract: A separator for a battery in lithium. The separator is a thick membrane, of around 60 to 120 ?m in polyvinylidene fluoride copolymer, which has considerable porosity, of around 50 to 90%, with pores of size between 1 and 10 ?m. With these characteristics, it is possible to optimize the operation of a battery with an electrode in, e.g., Li4Ti5O12, in particular for rapid charges and discharges, in other words in power applications.

Abstract: 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.