Abstract: Electrolyte for a lithium-ion battery comprising at least one block copolymer, characterized in that said block copolymer comprises at least one polymeric segment A which is soluble in said electrolyte and at least one polymeric segment B having a temperature for dissolution “T” in said electrolyte, the polymeric segments A and B being present in amounts sufficient to make possible an increase in the viscosity of the electrolyte, preferably up to gelling of the electrolyte, at a temperature greater than or equal to the temperature “T”; the ionic conduction is produced by a solvent comprising the copolymer and lithium salts.

Abstract: The invention relates to polymer compositions that conduct lithium ions including the following ingredients: at least one ionic polymer from the polymerisation of an ionic liquid, the cation of which bears at least one polymerisable function; at least one lithium salt; and at least one non-ionic polymer, the composition being a solid composition, i.e., a composition devoid of water and organic solvent(s). The invention also relates to the use of the polymer compositions for entering into the formation of electrolytic membranes of electrochemical lithium generators.

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 lithium-air storage battery having at least one electrochemical cell with a negative electrode, which is an air electrode; a positive electrode, which comprises a material for insertion of lithium; and an organic electrolyte conducting lithium ions, positioned between the negative electrode and positive electrode, the electrolyte not degrading, when it is subject to a voltage ranging from 3V to 5.5V expressed relatively to the Li+/Li pair and the storage battery having a potential difference between the electrochemical potential of the positive electrode and the electrochemical potential of the negative electrode greater than 4.5V expressed relatively to the Li+/Li pair.

Abstract: The present invention relates to a polymer possessing a linear backbone selected from the homopolymers belonging to the family of polyfluorenes, polycarbazoles, polyanilines, polyphenylenes, polyisothionaphthenes, polyacetylenes, polyphenylene vinylenes, and copolymers thereof, said backbone bearing at least one side group possessing at least one nitroxide function. It also relates to an electrode material, an electrode and a lithium secondary battery obtained from such a polymer.

Abstract: A casing for a lithium bipolar electrochemical battery including a bipolar element. The casing includes a composite material including a matrix and at least one porous reinforcement, the matrix of which includes at least one hardened polymer impregnating the at least one porous reinforcement, wherein the at least one porous reinforcement and the at least one hardened polymer encase the bipolar element and maintain a determined pressure on either side of the bipolar element to maintain a determined contact between its constituents.