Abstract: A safety current interrupter device for a rechargeable cell is provided comprising a deformable material (2) adapted to deform when the temperature reaches a threshold value, a deformable membrane (3) adapted to deform under the effect of pressure and/or deformation of the deformable material (2), and an electrically conductive link member (4), adapted to break as a result of the deformation of the deformable membrane (3).

Abstract: A positive electrode of an accumulator with an alkaline electrolyte comprising a nickel-based hydroxide and a lithiated oxide of formula LixMO2 wherein M represents at least one transition metal, 0.1?×?1, said lithiated oxide having a specific surface area as measured by the BET technique of less than 40 m2/g and a grain size of less than 1 ?m. A method for making a lithiated oxide of at least one transition metal comprising the steps of: a) providing a powder of an hydroxide of said at least one transition metal, b) suspending the powder in a lithine solution in the presence of a stream of a oxidizing gas in order to form a lithiated oxide of said at least one transition metal, the lithine concentration being at least equal to about 1 mol/L, c) adding to the suspension of step b) a solution containing an oxidizing compound, d) filtering the suspension, e) washing and drying the suspension.

Abstract: An alloy comprising tin, silicon and carbon, and containing a crystalline M-Sn phase, M being an inert metal. An alloy comprising tin and silicon, comprising: a) a nanocrystalline phase containing at least 50 at. % of the element silicon Si°; b) a nanocrystalline phase containing a compound based on tin; c) a nanocrystalline phase constituted by the element tin Sn°. A manufacturing process for this alloy.

Abstract: The subject of the present invention is a system for electric coupling of a plane connection (64, 67) to the electrodes of the same polarity of an electrochemical bundle (63) comprising an alternating sequence of at least one positive electrode and at least one negative electrode framing a separator, each electrode comprising a metal strip less than 50 ?m thick, serving as current collector, at least one surface of which is coated with a paste containing the electrochemically active material, the strips of the electrodes of each polarity comprising a non-coated lateral band emerging respectively from the opposite ends of said bundle, characterized in that the lateral bands of the strips of the same polarity are folded in a direction approximately perpendicular to their initial direction at a height at least equal to the distance separating them from the adjacent strips of the same polarity in order to form an approximately plane and continuous base (65, 68) to which said plane connection is welded.

Abstract: A system for electric coupling of a flat connection to a current output terminal comprising a tubular conducting slug is provided in which the connection comprises a hole and the connection is fixed on a transversal section of the slug in such a manner as to cause the hole to communicate with the inside of the tube.