Abstract: The present invention relates to a conductive electrode for a system for the storage of electrical energy (1) having an aqueous electrolyte solution, said electrode comprising a metal current collector (3) and an active material (7), said current collector (3) comprising at least one conductive protective layer (5) which is leaktight to electrolytes and which is placed between said metal current collector (3) and said active material (7), said conductive protective layer (5) comprising: a polymer or copolymer binder comprising at least 50% of vinyl chloride unit, a crosslinked elastomer, at least one agent for crosslinking said crosslinked elastomer, conductive fillers.

Abstract: A carbonaceous composition usable to constitute a supercapacitor cell electrode, a porous electrode usable to equip such a cell, a process for manufacturing this electrode and one such cell incorporating at least one such electrode, for example in order to equip an electric vehicle. This composition is usable to be in contact with an aqueous ionic electrolyte, is based on a carbonaceous powder and comprises a hydrophilic binder-forming system. The system may include between 3% and 10% by weight a first crosslinked polymer having a number-average molecular weight Mn of greater than 1000 g/mol and having alcohol groups, and between 0.3% and 3% by weight a second polymer of at least one acid and which has a pKa of between 0 and 6 and a number-average molecular weight Mn of greater than 500 g/mol, the first polymer being crosslinked thermally in the presence of the second polymer.

Abstract: The present invention relates to a conductive electrode for a system for the storage of electrical energy (1) having an aqueous electrolyte solution, said electrode comprising a metal current collector (3) and an active material (7), said current collector (3) comprising at least one conductive protective layer (5) which is leaktight to electrolytes and which is placed between said metal current collector (3) and said active material (7), said conductive protective layer (5) comprising: a polymer or copolymer binder comprising at least 50% of vinyl chloride unit, a crosslinked elastomer, at least one agent for crosslinking said crosslinked elastomer, conductive fillers.

Abstract: The present invention relates in particular to a conductive electrode for an electrical energy storage system (1) having an aqueous electrolyte solution, said electrode comprising a metallic current collector (3) and an active material (7), said metallic current collector (3) comprising a protective conductive layer (5) placed between said metallic current collector (3) and said active material (7), characterized in that said protective conductive layer (5) comprises: —between 30% and 85% as a proportion by weight of dry matter of a copolymer matrix, —between 70% and 15% as a proportion by weight of dry matter of conductive fillers, in addition to the proportion by weight of dry matter of copolymer in order to achieve a total of 100%.

Abstract: A supercapacitor cell is provided having unit cells arranged in series and encapsulated in a flexible and leak-tight packaging, and a supercapacitor module having at least one stack of several of these cells. The cell includes n unit cells (n?2) arranged side by side in series and encapsulated in the packaging, each unit cell having two upper and lower electrodes, a membrane separating them and an ionic electrolyte, the cell having inside of the packaging a plurality of current collectors, two upper and lower collector parts of which respectively cover the upper and lower electrodes. A pair of adjacent unit cells is covered with an upper or lower collector common to this pair, two truncated upper and/or lower collectors formed at two ends of the cell, two adjacent collectors respectively terminated by facing edge sections electrically insulated from one another by an insulating adhesive material covering them.

Abstract: A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. Electrodes composed of sulphur-modified monolithic porous carbon-based materials according to the invention and lithium batteries and supercapacitors having such electrodes also form part of the invention.

Abstract: Novel articles, in particular films, made from polymers, which are elastic, impermeable to water and permeable to water vapor. Said articles are made from a composition comprising a dispersion of an elastomer in an aqueous solvent, a hydrophilic compound and a cross-linking agent.

Abstract: The present invention relates to a multilayer transparent conducting electrode, comprising a substrate layer (1), an adhesion layer (2), a percolating network of metal nanofilaments (3) and an electrical homogenization layer (4), the said electrical homogenization layer (4) comprising: an elastomer having a glass transition temperature Tg of less than 20° C. and/or a thermoplastic polymer having a glass transition temperature Tg of less than 20° C. and/or a polymer, an optionally substituted polythiophene conducting polymer, and nanometric conducting or semiconducting fillers.

Abstract: A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. Electrodes composed of sulphur-modified monolithic porous carbon-based materials according to the invention and lithium batteries and supercapacitors having such electrodes also form part of the invention.

Abstract: The present invention relates in particular to a conductive electrode for an electrical energy storage system (1) having an aqueous electrolyte solution, said electrode comprising a metallic current collector (3) and an active material (7), said metallic current collector (3) comprising a protective conductive layer (5) placed between said metallic current collector (3) and said active material (7), characterized in that said protective conductive layer (5) comprises:—between 30% and 85% as a proportion by weight of dry matter of a copolymer matrix,—between 70% and 15% as a proportion by weight of dry matter of conductive fillers, in addition to the proportion by weight of dry matter of copolymer in order to achieve a total of 100%.

Abstract: The present invention relates to a novel polymer composition having conductive properties comprising: (a) at least one dispersion or suspension of elastomer having a Tg<20° C. and/or of thermoplastic polymer having a Tg<20° C., and/or a polymer solution, (b) at least one optionally substituted polythiophene conductive polymer, (c) particles of crosslinked or uncrosslinked polymer chosen from functionalized or unfunctionalized particles of polystyrene, of polycarbonate, of polymethylene melamine, said un crosslinked polymer particles having a Tg>80° C., glass particles, silica particles, and/or particles of metal oxides chosen from the following metal oxides: ZnO, MgO, MgAl2O4, and borosilicate particles.

Abstract: A supercapacitor cell is provided having unit cells arranged in series and encapsulated in a flexible and leak-tight packaging, and a supercapacitor module having at least one stack of several of these cells. The cell includes n unit cells (n?2) arranged side by side in series and encapsulated in the packaging, each unit cell having two upper and lower electrodes, a membrane separating them and an ionic electrolyte, the cell having inside of the packaging a plurality of current collectors, two upper and lower collector parts of which respectively cover the upper and lower electrodes. A pair of adjacent unit cells is covered with an upper or lower collector common to this pair, two truncated upper and/or lower collectors formed at two ends of the cell, two adjacent collectors respectively terminated by facing edge sections electrically insulated from one another by an insulating adhesive material covering them.

Abstract: The invention relates to a ribbed power transmission belt exhibiting a toothing made of elastomer based on ethylene/?-olefin elastomer, characterized in that at least the sides of the toothing are coated with a film made of at least partially crosslinked thermoplastic comprising at least 30% of at least one low-density polyethylene having a molecular weight of between 50 000 and 200 000 g/mol. The invention also relates to a manufacturing process which makes use of the application of a said thermoplastic film in the noncrosslinked or at least partially crosslinked state.

Abstract: A subject-matter of the invention is a novel process for the preparation of sulphur-modified monolithic porous carbon-based materials by impregnation with a strong sulphur-based acid, the materials capable of being obtained according to this process and the use of these materials with improved supercapacitance properties to produce electrodes intended for energy storage systems. Electrodes composed of sulphur-modified monolithic porous carbon-based materials according to the invention and lithium batteries and supercapacitors comprising such electrodes also form part of the invention.

Abstract: The invention relates to a method for modifying the surface of a membrane by plasma treatment, wherein said method imparts water-repellent and imperviousness properties to said membrane while preserving the steam perviousness and the elastic properties thereof. The method comprises, inter alia, a step of treating the membrane with a plasma of a precursor compound selected from a hydrocarbon gas, a fluorocarbon gas, mixtures thereof, a fluorocarbon liquid, a fluorocarbon solid, wherein the precursor compound is selected in such a way that the F/C ratio is lower than 2, followed by a step of treating the same surface of the substrate from the previous step with a plasma of a fluorocarbon gas selected in such a way that the F/C ratio is at least 2. The invention also relates to the resulting membranes.

Abstract: Novel articles, in particular films, made from polymers, which are elastic, impermeable to water and permeable to water vapour. Said articles are made from a composition comprising a dispersion of an elastomer in an aqueous solvent, a hydrophilic compound and a cross-linking agent.

Abstract: The invention relates to a ribbed power transmission belt exhibiting a toothing made of elastomer based on ethylene/?-olefin elastomer, characterized in that at least the sides of the toothing are coated with a film made of at least partially crosslinked thermoplastic comprising at least 30% of at least one low-density polyethylene having a molecular weight of between 50 000 and 200 000 g/mol. The invention also relates to a manufacturing process which makes use of the application of a said thermoplastic film in the noncrosslinked or at least partially crosslinked state.