Alcatel

Sylvie Barusseau

Xavier Andrieu

Philippe Biensan

Bernard Simon

Bernadette Pichon

Aziza Gouchi

Jean-Pierre Flipo

V&eacute;ronique Danel

Sylvie Herreyre

Florence Martin

Françoise Ducatel

Fran&ccedil;oise Perton

The present invention relates to a sheath () for a cable (), where the sheath contains, at least in part, a halogen-free intumescent composition. The composition of the sheath contains a mixture of a polymer matrix chosen from a polyethylene, a polypropylene, an ethylene copolymer, a propylene copolymer, a silicone, a polyamide, and a mixture thereof and at least one flame-retardant additive. The flame retardant additive has a first inorganic compound having a lamellar crystal structure, and a second inorganic compound inserted between the lamellae of the first compound, where the second compound causes the lamellae to move apart under the application of heat.

Cable sheath including a halogen-free intumescent composition

The present invention provides a rechargeable lithium electrochemical cell comprising an electrolyte containing a lithium salt dissolved in a non-aqueous solvent, at least one positive electrode, and at least one negative electrode of the paste type containing an electrochemically active material which is a carbon compound suitable for inserting lithium ions and a binder, the cell being characterized in that said solvent contains at least one saturated cyclic carbonate and at least one linear ester of a saturated aliphatic monocarboxylic acid, and in that said binder is a polymer having no fluorine.

Rechargeable lithium electrochemical cell usable at low temperature

The invention relates to a supercapacitor having a non-aqueous electrolyte and two carbon electrodes each containing a binder and an electrochemically active material constituted by active carbon having a specific surface area greater than about 2000 m /g. The binder has a mixture of carboxymethylcellulose and a copolymer of styrene and butadiene.

Supercapacitor having a non-aqueous electrolyte and an active carbon electrode

The present invention consists in a binder for an electrode in an electrochemical system with a non-aqueous electrolyte, characterized in that it contains acrylonitrile-butadiene rubber and carboxymethylcellulose with an average molecular weight of over about 200 000.

Binder for an electrode of an electrochemical system with a non-aqueous electrolyte

Growing community of inventors

Bretigny sur Orge, France

Sylvie Barusseau