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 invention relates to a material including a support consisting of a porous composite material including at least one polymer phase forming a binder based on at least one polymer selected from thermoplastic polymers, elastomers, and elastomer thermoplastics, and at least one filler selected from thermally conductive fillers, the pores of the support consisting of the porous composite material being partially or entirely filled with at least one phase-change material. The invention also relates to a method for producing said material.

Abstract: The present invention relates to a multilayer conductive transparent electrode comprising: a substrate layer (1), a conductive layer (2) comprising at least one optionally substituted polythiophene conductive polymer, and the conductive layer (2) being in direct contact with the substrate layer (1) and the conductive layer (2) also comprising at least one hydrophobic adhesive polymer which has chemical compatibility with the optionally substituted polythiophene conductive polymer, such that said multilayer conductive transparent electrode has a coefficient of haze of less than or equal to 3%. The invention also relates to the process for manufacturing such a multilayer conductive transparent electrode.

Abstract: Electrode for storing electrical energy including a metal current collector and an active material, the current collector being coated on at least one portion of one of its faces with at least one protective layer placed between the current collector and the active material, the protective layer including: (A) a polymer matrix including: (A1) at least one cross-linked epoxy polymer or copolymer, (A2) at least one elastomer, and (B) conductive fillers. This system is used in aqueous electrolyte supercapacitors, the protective layer allowing a very significant reduction in corrosion problems that are generally associated with the use of aqueous electrolytes to be achieved and the adhesion of the active material to the metal collector to be improved.

Abstract: The invention relates to a gelled aqueous polymer composition for forming, by means of drying then pyrolysis, a monolithic porous carbon, to a pyrolysed carbonated composition produced by the drying, followed by the pyrolysis, of said gelled composition, to a porous carbon electrode for a supercapacitor comprising said pyrolysed composition, and to methods for producing said respectively gelled and pyrolysed compositions. A gelled composition according to the invention, produced from the polycondensation of polyhydroxybenzene(s) and hexymethylenetetramine, is such that the hexymethylenetetramine comprised therein represents a mass fraction of between 7% and 15% inclusive. Said gelled composition is produced by a) polycondensation in an aqueous solvent of the polyhydroxybenzene(s) and hexymethylenetetramine, followed by b) gelling by heating of said polycondensate.

Abstract: The present invention relates to a flexible composite organic aerogel (1) comprising: a textile reinforcement (5), an organic aerogel (3) placed within said textile reinforcement (3), said organic aerogel (3) being based on a resin resulting at least in part from polyhydroxybenzene(s) R and formaldehyde(s) F, said organic aerogel (3) being a polymeric organic gel comprising at least one water-soluble cationic polyelectrolyte, or said organic aerogel (3) being a pyrolysate of said gel in the form of a porous carbon monolith comprising the product of the pyrolysis of said at least one water-soluble cationic polyelectrolyte P, said organic aerogel (3) exhibiting a specific thermal conductivity of between 10 and 40 mW·m?1·K?1 at atmospheric pressure.

Abstract: An anode usable in a cell of a lithium-ion battery comprising an electrolyte based on a lithium salt and a non-aqueous solvent, to a process for manufacturing this anode and to a lithium-ion battery having one or more cells incorporating this anode. This anode is based on a polymer composition, obtained by melt processing and without solvent evaporation, that is the product of a hot compounding reaction between an active material and additives having a polymer binder and an electrically conductive filler. The binder is based on at least one crosslinked elastomer and the additives furthermore include at least one non-volatile organic compound usable in the electrolyte solvent, the composition advantageously includes the active material in a mass fraction greater than or equal to 85%.

Abstract: Method for preparing an intermetallic material SnSb, said method comprising at least the following steps: a/mixing the precursors Sn and Sb, b/treating the mixture from step a/with microwaves. The intermetallic phase obtained may be used for the manufacture of electrodes.

Abstract: The invention relates to an ionogel that may be used for making a self-supporting film forming a solid electrolyte of an electrochemical device, to such a device incorporating this ionogel and to a process for manufacturing this ionogel. The invention generally applies to all energy storage devices such as supercapacitors or storage batteries (e.g. lithium-ion). An ionogel according to the invention comprises: a polymeric confinement matrix which comprises at least one polylactic acid, and at least one ionic liquid confined in this matrix. According to the invention, this matrix also comprises a polycondensate of at least one sol-gel molecular precursor bearing hydrolysable group(s).

Abstract: A process for preparing a reinforced and reactive thermoplastic composition having a continuous phase based on a thermoplastic polymer and dispersed therein is a discontinuous phase based on a reactive reinforcing agent that may be immiscible with the thermoplastic polymer is provided. A composition obtained by this process is also provided. The reinforcing agent is selected from the group consisting of epoxy resins, polyorganosiloxanes having SiH functional group(s), diisocyanates or polyisocyanates and mixtures thereof, comprises a grafting, a branching and/or a crosslinking, that are carried out in situ, by reactive compounding of these phases with a shear rate greater than 102 s?1, of the reinforcing agent onto the chain of the thermoplastic polymer, so that the discontinuous phase is dispersed homogeneously in the continuous phase in the form of nodules having a number-average size of less than 5 ?m.

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 invention relates to a gelled, crosslinked and non-dried aqueous polymeric composition capable of forming a non-monolithic organic aerogel by drying, to this aerogel, to a non-monolithic porous carbon resulting from a pyrolysis of this aerogel, to an electrode based on this porous carbon, and to a process for preparing this composition and this aerogel. The invention applies in particular to supercapacitors. A gelled, crosslinked and non-dried composition according to the invention, which is based on a resin resulting at least partly from a polycondensation of polyhydroxybenzene(s) R and formaldehyde(s) F and which comprises at least one water-soluble cationic polyelectrolyte P, is such that the composition is formed from an aqueous dispersion of microparticles of a shear-thinning physical gel that is crosslinked in an aqueous medium.

Abstract: The invention relates to a cathode that is usable in a cell of a lithium-ion battery comprising an electrolyte based on a lithium salt and on a non-aqueous solvent, to a process for manufacturing this cathode and to a lithium-ion battery having one or more cells incorporating this cathode. This cathode is based on a polymer composition, obtained by melt processing and without solvent evaporation, that is the product of a hot compounding reaction between an active material and additives including a polymer binder and an electrically conductive filler. According to the invention, the binder is based on at least one crosslinked elastomer and the additives furthermore comprise at least one non-volatile organic compound usable in the electrolyte solvent, the composition advantageously includes the active material in a mass fraction greater than or equal to 90%.

Abstract: The invention relates to a gelled carbon-based composition forming an organic polymeric monolithic gel which is suitable for forming an aerogel by drying, to uses and to a process for preparing this carbon-based composition. The invention applies especially to the production of such gels having a very low density and a very low heat conductivity, a very high specific surface area and a satisfactory compression strength, for their use as thermal superinsulators or as carbon-based electrode precursors of supercondensers. A composition according to the invention comprises a resin at least partly derived from polyhydroxybenzenes H and from formaldehyde(s) F, said polyhydroxybenzenes comprising at least one unsubstituted poly-hydroxybenzene R? and at least one polyhydroxybenzene substituted with one or two alkyl groups.

Abstract: A process for preparing a polymeric composition for forming a lithium-ion or sodium-ion battery electrode or a supercapacitor electrode or for exhibiting magnetic properties, to such a polymeric composition obtained by means of this process, to a mixture which is a precursor of the composition, obtained by means of a first mixing step of the process, and to this electrode. The process for preparing this composition comprises: a) hot-mixing, via the melt process and without solvent, at least one active material, a binder-forming polymeric phase and a sacrificial polymeric phase so as to obtain a mixture, and b) at least partially eliminating said sacrificial polymeric phase so as to obtain said composition which comprises the active material(s) according to a weight fraction greater than 80%. The sacrificial phase is used in step a) according to a weight fraction in the mixture being greater than or equal to 15%.

Abstract: The invention relates to a cathode that is usable in a cell of a lithium-ion battery comprising an electrolyte based on a lithium salt and on a non-aqueous solvent, to a process for manufacturing this cathode and to a lithium-ion battery having one or more cells incorporating this cathode. This cathode is based on a polymer composition, obtained by melt processing and without solvent evaporation, that is the product of a hot compounding reaction between an active material and additives including a polymer binder and an electrically conductive filler. According to the invention, the binder is based on at least one crosslinked elastomer and the additives furthermore comprise at least one non-volatile organic compound usable in the electrolyte solvent, the composition advantageously includes the active material in a mass fraction greater than or equal to 90%.

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: An anode usable in a cell of a lithium-ion battery comprising an electrolyte based on a lithium salt and a non-aqueous solvent, to a process for manufacturing this anode and to a lithium-ion battery having one or more cells incorporating this anode. This anode is based on a polymer composition, obtained by melt processing and without solvent evaporation, that is the product of a hot compounding reaction between an active material and additives having a polymer binder and an electrically conductive filler. The binder is based on at least one crosslinked elastomer and the additives furthermore include at least one non-volatile organic compound usable in the electrolyte solvent, the composition advantageously includes the active material in a mass fraction greater than or equal to 85%.

Abstract: A non-crosslinked, gelled carbonaceous composition and a pyrolysed composition respectively forming an aqueous polymer gel and the pyrolysate thereof in the form of porous carbon is provided. Also provided is a production method thereof, to a porous carbon electrode formed by the pyrolysed composition, and to a supercapacitor containing the electrodes. The gelled, non-crosslinked composition (G2) is based on a resin created at least partly from polyhydroxybenzene(s) R and formaldehyde(s) F and comprises at least one hydrosoluble cationic polyelectrolyte P. The composition forms a rheofluidifying physical gel. A pyrolysed carbonaceous composition having a carbon monolith, is the product of coating, crosslinking, drying then pyrolysis of the non-crosslinked gelled composition, the carbon monolith being predominantly microporous and able to form a supercapacitor electrode having a thickness of less than 1 mm.

Abstract: The present invention relates to a multilayer conductive transparent electrode comprising: a substrate layer, a conductive layer comprising: at least one optionally substituted polythiophene conductive polymer, and a percolating network of metal nanofilaments, the conductive layer being in direct contact with the substrate layer and the conductive layer also comprising at least one hydrophobic adhesive polymer or adhesive copolymer. The invention also relates to the process for manufacturing such a multilayer conductive transparent electrode.