Abstract: The present invention pertains to a fluoropolymer hybrid organic/inorganic composite, to a process for manufacturing said fluoropolymer hybrid organic/inorganic composite and films and membranes thereof and to uses of said fluoropolymer hybrid organic/inorganic composite and films and membranes thereof in various applications.

Abstract: The present invention relates to a method for synthesizing ionic liquids comprising a carbonate functional group characterized in that it comprises a step of reaction A without addition of lithium between a first reactant selected among an imidazolium, a pyrrolidinium or an ammonium and a second reactant being a methyl formate imidazolium. The first reactant is an imidazolium alcohol, a pyrrolidinium alcohol or an ammonium alcohol salt, the anion of which is NTf2. The second reactant is a chloromethyl formate imidazolium. The application of this method will be found in the field of green chemistry and more specifically in the production of ionic liquids which can be used in lithium batteries with a graphite electrode.

Abstract: Binder for an electrode of an electrochemical system having a non-aqueous electrolyte, said binder comprising a first polymer which has functional groups capable of reacting with a crosslinking agent and is crosslinked with said crosslinking agent, the crosslinked first polymer forming a three-dimensional network in which a second polymer chosen from fluoropolymers is imprisoned.

Abstract: The present invention pertains to a fluoropolymer hybrid organic/inorganic composite, to a process for manufacturing said fluoropolymer hybrid organic/inorganic composite and films and membranes thereof and to uses of said fluoropolymer hybrid organic/inorganic composite and films and membranes thereof in various applications.

Abstract: The present invention pertains to an electrode-forming composition, to use of said electrode-forming composition in a process for the manufacture of a composite electrode, to said composite electrode and to a secondary battery comprising said composite electrode.

Abstract: The invention concerns a new flexible or rigid packaging for an electrochemical accumulator (A). The packaging contains at least one polyaryletherketone (PAEK) sheet, notably a polyetheretherketone (PEEK™) sheet. According to a preferred embodiment, a polyaryletherketone (PAEK) sheet incorporates within it at least one metal stud constituting one of the poles of the accumulator. The packaging is useful for the packaging of lithium-ion accumulators.

Abstract: The invention concerns a new flexible or rigid packaging for an electrochemical accumulator (A). It is made from at least one polyaryletherketone (PAEK) sheet, notably a polyetheretherketone (PEEK™) sheet. According to a preferred embodiment, a polyaryletherketone (PAEK) sheet (6.1, 6.2, 6.3, 61) incorporates within it at least one metal stud (40, 50) constituting one of the poles of the accumulator. The main application sought is the packaging of lithium-ion accumulators.

Abstract: The present invention relates to a method for synthesizing ionic liquids comprising a carbonate functional group characterized in that it comprises a step of reaction A without addition of lithium between a first reactant selected among an imidazolium, a pyrrolidinium or an ammonium and a second reactant being a methyl formate imidazolium. The first reactant is an imidazolium alcohol, a pyrrolidinium alcohol or an ammonium alcohol salt, the anion of which is NTf2. The second reactant is a chloromethyl formate imidazolium. The application of this method will be found in the field of green chemistry and more specifically in the production of ionic liquids which can be used in lithium batteries with a graphite electrode.

Abstract: Disclosed is a liquid electrolyte for a lithium accumulator and the use thereof in a lithium accumulator at low temperature. The liquid electrolyte includes at least one lithium salt dissolved in a mixture of non-aqueous organic solvents. The mixture of organic solvents is formed by propylene carbonate (PC), ?-butyrolactone (GBL) and ethyl methyl carbonate (EMC). The mixture of organic solvents preferably contains between: 0.5% and 33% in volume of propylene carbonate, 0.5% and 33% in volume of ?-butyrolactone and, 0.5% and 99% in volume of ethyl methyl carbonate, the sum of the respective volume percentages of propylene carbonate, ?-butyrolactone, and ethyl methyl carbonate in the mixture being equal to 100%.

Abstract: The invention relates to an ionic liquid electrolyte comprising at least one ionic liquid of formula C+A? wherein C+ represents a cation and A? represents an anion, and at least one conducting salt, characterized in that it further comprises at least one anionic surfactant. The invention also relates to an electrotechnical system, electrochemical accumulator and battery, and in particular, a lithium accumulator such as a button battery cell.

Abstract: The invention relates to an electrode for a lithium battery that contains LiFePO4 as electrochemically active material and a binder consisting of polyacrylic acid. The polyacrylic acid has a mean molecular weight greater than or equal to 1,250,000 g·mol?1 and strictly less than 2,000,000 g·mol?1. The percentage of LiFePO4 is greater than 90% by weight and the percentage of polyacrylic acid is less than or equal to 4%, said percentages being calculated with respect to the total weight of the electrode. The invention further relates to a lithium storage battery having a power or energy operating mode that contains the electrode for a lithium battery.

Abstract: A method for making a Li-ion battery including the preparation of a positive electrode from an ink comprising at least one active electrode material, and at least one binder; the preparation of an electrode separator from an ink comprising at least one fluorinated copolymer; the preparation of a negative electrode from an ink comprising at least one active electrode material, and at least one binder. The fluorinated copolymer comprises: from 99.99 to 90 mol % of at least one fluorinated monomer; from 0.01 to 10 mol % of at least one acrylic acid derivative of formulae CR1R2?CR3—C(?O)—O—R4 wherein each of R1, R2, R3, equal or different from each other, is independently a hydrogen atom or a C1-C3 hydrocarbon group, and R4 is a hydrogen or a C1-C5 hydrocarbon moiety comprising at least one hydroxyl group.

Abstract: A photovoltaic system including: one photovoltaic panel including a face configured to receive light rays, one battery mechanically connected to the photovoltaic panel by a retaining structure, and one space which is opened onto the environment external to the photovoltaic system forming an air layer separating the battery and the photovoltaic panel and including a thickness at least equal to approximately 1 cm. The ratio between the thickness of the photovoltaic system and a dimension of one side of the face of the photovoltaic panel is less than or equal to approximately ?.

Abstract: Disclosed is a liquid electrolyte for a lithium accumulator and the use thereof in a lithium accumulator at low temperature. The liquid electrolyte includes at least one lithium salt dissolved in a mixture of non-aqueous organic solvents. The mixture of organic solvents is formed by propylene carbonate (PC), ?-butyrolactone (GBL) and ethyl methyl carbonate (EMC). The mixture of organic solvents preferably contains between: 0.5% and 33% in volume of propylene carbonate, 0.5% and 33% in volume of ?-butyrolactone and, 0.5% and 99% in volume of ethyl methyl carbonate, the sum of the respective volume percentages of propylene carbonate, ?-butyrolactone, and ethyl methyl carbonate in the mixture being equal to 100%.

Abstract: A liquid electrolyte for a lithium battery including lithium perchlorate (LiClO4) dissolved in a quaternary mixture of ethylene carbonate (EC), diethyl carbonate (DEC), tetrahydrofurane (THF) and ethyl methyl carbonate (EMC). The liquid electrolyte advantageously contains between: 10% and 30% by mass of ethylene carbonate (EC), 10% and 30% by mass of diethyl carbonate (DEC), 10% and 30% by mass of tetrahydrofurane (THF) and, 10% and 70% by mass of ethyl methyl carbonate (EMC). The quaternary mixture is preferably a EC/DEC/THF/EMC mixture in a 1/1/1/3 mass ratio. The liquid electrolyte is particularly suitable for use in a lithium battery.

Abstract: The liquid electrolyte storage battery includes a battery case consisting of a top wall, a bottom wall and a side wall delineating a cavity. The top wall includes an electrolyte injection hole. The battery case also includes a lateral hole formed in a bottom area of the side wall and defining a tank area for a liquid electrolyte solution. The tank area is delineated by the bottom wall, the side wall and a plane parallel to the bottom wall and passing via the lower edge of the lateral hole.

Abstract: The invention relates to a lithium storage battery comprising at least one electrochemical cell arranged in a tightly sealed packaging. The electrochemical cell is formed by a stack comprising a separator arranged between first and second electrodes. The separator is impregnated by an ionic liquid electrolyte comprising a mixture of a lithium salt, vinyl ethylene carbonate and an ionic liquid of formula C+A? in which C+ represents a cation and A? represents an anion. The first electrode comprises an electrochemically active material and a polymer-based binder chosen from polyacrylic acid (PAA) and sulfonated perfluoropolymers.

Abstract: The invention relates to an electrode for a lithium battery that contains LiFePO4 as electrochemically active material and a binder consisting of polyacrylic acid. The polyacrylic acid has a mean molecular weight greater than or equal to 1,250,000 g·mol?1 and strictly less than 2,000,000 g·mol?1. The percentage of LiFePO4 is greater than 90% by weight and the percentage of polyacrylic acid is less than or equal to 4%, said percentages being calculated with respect to the total weight of the electrode. The invention further relates to a lithium storage battery having a power or energy operating mode that contains the electrode for a lithium battery.

Abstract: The invention concerns a new flexible or rigid packaging for an electrochemical accumulator (A). It is made from at least one polyaryletherketone (PAEK) sheet, notably a polyetheretherketone (PEEK™) sheet. According to a preferred embodiment, a polyaryletherketone (PAEK) sheet (6.1, 6.2, 6.3, 61) incorporates within it at least one metal stud (40, 50) constituting one of the poles of the accumulator. The main application sought is the packaging of lithium-ion accumulators.

Abstract: The invention relates to a lithium ion rechargeable accumulator or secondary battery comprising a negative electrode, the active material of which is graphite carbon, a positive electrode, the active material of which is LiFePO4, and an ionic liquid electrolyte comprising at least one ionic liquid of formula C+A? wherein C+ represents a cation and A? represents an anion, and at least one conducting salt, the ionic liquid electrolyte further comprising an organic additive which is vinyl ethylene carbonate (VEC).