Abstract: A method for manufacturing an electrically conducting article is disclosed. According to some aspects, the method includes dry mixing a powder comprising at least one thermosetting resin, a hardener compound powder for the resin and an electrically conducting filler powder, the thermosetting resin including at least two epoxide groups. The method further includes thermocompressing the mixture of powders in a mold with a shape adapted to the article and at an effective temperature for obtaining cross-linking of the resin.

Abstract: The invention relates to compositions comprising at least one fluorinated compound of the following formula (I): wherein: X corresponds to a unit of the following formula (II): or to a sequence of said unit of formula (II), wherein R3, R4, R5 et R6 represent, independently of each other, a halogen atom, a hydrogen atom, a perfluoroalkoxy group, a perfluoroalkyl group provided that at least one of said R3, R4, R5 et R6 represents a fluorine atom, a perfluoroalkoxy group or a perfluoroalkyl group; R1 and R2 represents, independently of each other, an alkyl group; and comprising at least one lithium salt.

Abstract: A fluorinated copolymer including at least one recurrent unit of the following formula (I): and at least one recurrent unit of the following formula (II): in which: RF represents a perfluorocarbon chain optionally including one or more oxygen atoms; X represents a halogen atom, OR with R representing a hydrogen atom or a cation; R1 represents a hydrocarbon chain or perfluorocarbon chain; and Z represents a perfluorocarbon chain.

Abstract: This invention relates to an electrolytic composition comprising at least one organic solvent in which one or several non-lithiated ionic salts are dissolved, characterised in that an ionic liquid is added to this electrolytic composition. Application to energy storage devices.

Abstract: The present invention relates to ionic liquids comprising, as cation, a specific phosphonium cation, as anion, a formiate anion, which can be used, alone or as a mixture, to constitute electrolytes for energy storage devices.

Abstract: The invention relates to a method for functionalization of inorganic particles by polymers comprising at least one recurrent unit bearing at least one proton exchange group comprising the following steps: a) a step for functionalization of inorganic particles by an anionic polymerization termination agent comprising at least one group capable of being bound to the surface of said particles; b) a step for anionic polymerization of at least one monomer bearing at least one precursor group of a proton exchange group; c) a step for putting the particles obtained in step a) in contact with the polymers obtained in step b), in return for which the obtained particles are particles functionalized by said polymers by reaction between a reactive end of said polymeric polymers and at least one group of the aforementioned termination agent; and d) a step for transformation of the precursor group(s) of said proton exchange group(s).

Abstract: This invention concerns copolymers that may be used for incorporation into electrolytic membranes for lithium generators, comprising at least one vinyl ether repetitive motif comprising a pendant cyclic carbonate group.

Abstract: The invention relates to a process for preparing proton-conducting clay particles, successively comprising the following steps: a) a step of activating a clay powder, comprising a step in which the said powder is subjected to a gas plasma; b) a grafting step comprising a step of placing the activated powder obtained from step a) in contact with a solution comprising at least one compound comprising at least one group chosen from —PO3H2, —CO2H and —SO3H and salts thereof and comprising at least one group capable of grafting onto the surface of the said powder. Use of these particles for the manufacture of fuel cell membranes.

Abstract: The invention relates to proton-conducting composites comprising a polymer matrix within which inorganic particles are dispersed, grafted to the surface of which particles are polymers comprising repeat units that comprise at least one acid proton-exchange group, optionally in the form of salts, or a precursor group of said acid group, said particles being chosen from particles of zeolites, of zirconium phosphates or phosphonates, or of oxides. Application to the field of fuel cells.

Abstract: The invention relates to novel copolymers and to an associated preparation method, comprising recurrent units bearing a pendant chain of the polyoxyalkylene type.

Abstract: The invention relates to a method for preparing a composite material comprising a polymeric matrix and a filler consisting in ion exchange inorganic particles, comprising a step for synthesis in situ of said particles within the polymeric matrix.

Abstract: Copolymers comprising at least one recurrent unit of the following formula (I) are provided: and at least one recurrent unit of the following formula (II): wherein: R1 is an alkylene group; Z is a —PO3R3R4, R3 and R4 representing independently of each other, a hydrogen atom an alkyl group, a cation; X and Y represent, independently of each other, a halogen atom, a perfluorocarbon group.

Abstract: A fluorinated copolymer including at least one recurrent unit of the following formula (I): and at least one recurrent unit of the following formula (II): in which: RF represents a perfluorocarbon chain optionally including one or more oxygen atoms; X represents a halogen atom, OR with R representing a hydrogen atom or a cation; R1 represents a hydrocarbon chain or perfluorocarbon chain; and Z represents a perfluorocarbon chain.

Abstract: The invention relates to a method for manufacturing an electrically conducting article comprising the following steps: a step for mixing via a dry route a powder comprising at least one thermosetting resin comprising at least two epoxide groups, a hardener compound powder for said resin and an electrically conducting filler powder; a step for thermocompression of the mixture of powders obtained in the previous step in a mold with a shape adapted to the article and at an effective temperature for obtaining cross-linking of the resin, at the end of which the electrically conducting article is obtained.

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 proton-conducting composites comprising a polymer matrix within which inorganic particles are dispersed, grafted to the surface of which particles are polymers comprising repeat units that comprise at least one acid proton-exchange group, optionally in the form of salts, or a precursor group of said acid group, said particles being chosen from particles of zeolites, of zirconium phosphates or phosphonates, or of oxides. Application to the field of fuel cells.

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: This invention relates to a method for continuously producing a CCB type of “Electrode-Membrane-Electrode” assembly comprising a polymer electrolyte membrane (26) on which a first electrode (21) formed from a first active layer and a first gas diffusion layer is formed on a first face, and a second electrode (21?) formed from a second active layer and a second gas diffusion layer is formed on a second face, in which the membrane and the two electrodes are assembled continuously by dynamic pressing at a temperature below 100° C., the outside surface of the active layer of each electrode, that will come into contact with a face of the membrane having firstly been heated to a temperature between 50° C. and 200° C., which comprises the following steps: a step to position rolls for the polyelectrolyte membrane (26) and two peel-off adhesive backing films (23, 23?), and a step to cut out electrodes (21, 21?) and deposit them on these backing films (23, 23?).

Abstract: The invention relates to a process for preparing proton-conducting clay particles, successively comprising the following steps: a) a step of activating a clay powder, comprising a step in which the said powder is subjected to a gas plasma; b) a grafting step comprising a step of placing the activated powder obtained from step a) in contact with a solution comprising at least one compound comprising at least one group chosen from —PO3H2, —CO2H and —SO3H and salts thereof and comprising at least one group capable of grafting onto the surface of the said powder. Use of these particles for the manufacture of fuel cell membranes.