Saft

Alcatel

Alcatel Alsthom Compagnie Generale D'electricite

Saft, Sa

Saft Groupe Sa

Centre National De La Recherche Scientifique

Centre National De La Recherche Scientifique-cnrs

Université Paris Est Creteil Val De Marne

Universite De Paris Est Creteil Val De Marne Upec

Patrick Bernard

Claudette Audry

Michelle Baudry

Lionel Goubault

Bernard Knosp

Olivier Simonneau

Andre Lecerf

Gerard Rigobert

Jacques Bouet

Jean-Michel Cocciantelli

Philippe Borel

Isabelle Coco

Stephane Senyarich

Thierry Hezeque

Mélanie Dendary

Stéphanie Chevalier

St&eacute;phane Senyarich

Martin Hytch

Laure Le-Guenne

Jean-Michel Dauchier

Francedillaoise Bertrand

Gérard Rigobert

Junxian Zhang

Corinne Dennig

Jos&eacute; Alcorta

Celine Lavaud

Michele Baudry

Nicolas Leroy

Rémi Najean

Olivier Jan

Amélie Ferey

Olivier Guiader

Michel Hilaire

Stéphane Gillot

Vincent Vivier

Judith Monnier

Suzanne Joiret

Stéphanie David

Michel Latroche

Thierry Feugnet

Virginie Serin

The invention relates to an electrochemical element and a battery comprising one or more electrochemical elements, with integrated sensors and/or actuators, in particular including an application for monitoring the operation of an electrochemical element or a Li-ion battery, and/or triggering actions in such an element or such a battery, intended to secure the element or the battery. The electrochemical element () comprises a closed shell () defining an internal volume and a beam () arranged therein having alternating positive and negative electrodes respectively connected to two positive and negative electrical output terminals housing separators, the beam () being impregnated with electrolyte and further connected by connection means () to one () of the electrical output terminals. It further comprises one or mote self-powered sensor and/or actuator elements (to) each arranged in contact with one component selected from the shell (), the beam (), the connection means (), and the output terminal (), and capable of measuring a physical or chemical magnitude relative to, and/or generating a physical action or effect on, the surroundings thereof.

Electrochemical cell and battery with integrated sensor and/or actuator

An asymmetrical supercapacitor including an alkaline electrolyte, at least one separator, at least one positive electrode including a nickel-based hydroxide and a nickel-based current collector, and at least one negative electrode including a nickel-based current collector and having a porous three-dimensional structure. Some pores are open, the mean diameter of the open pores being greater than or equal to 100 &#x3bc;m and being less than or equal to 300 &#x3bc;m and two contiguous open pores () communicate by at least one opening () the mean diameter of which is greater than or equal to 35 &#x3bc;m and less than or equal to 130 &#x3bc;m. The three-dimensional structure includes a mixture including at least one activated carbon, at least one electron-conducting additive, and a binding agent including at least one elastomer polymer and at least one thickening polymer.

Asymmetrical supercapacitor with alkaline electrolyte comprising a three-dimensional negative electrode and method for producing same

The invention proposes a composition comprising: The invention also relates to an anode comprising the composition according to the invention. The invention also relates to an alkaline electrolyte battery comprising said at least one anode.

Composition for negative electrode of alkaline electrolyte battery

A positive electrode of an accumulator with an alkaline electrolyte comprising a nickel-based hydroxide and a lithiated oxide of formula LiMOwherein A method for making a lithiated oxide of at least one transition metal comprising the steps of:

Lithiated oxide for a positive electrode of an alkaline accumulator

An electrode including a conductive metal support and a paste including an electrochemically-active material and a binder. The binder includes a compound of silane type, and a polymer having at least one acrylic monomer, and representing at least approximately 0.15% of the weight of said paste. The use of this binder improves the calendar or cycle life of the battery at a temperature greater than or equal to 25&#xb0; C., preferably at a temperature greater than or equal to 40&#xb0; C.

Plasticized electrode for an alkaline battery

An active material composition for an alkaline storage battery comprises a) an alloy capable of forming a hydride, of formula RMgNiMin which R is La, optionally substituted by Nd and/or Pr, M is at least one element chosen from the group comprising Mn, Fe, Al, Co, Cu, Zr and Sn, in which 0.1&#x2266;y&#x2266;0.4, 3.2&#x2266;t&#x2266;3.5, and z&#x2266;0.5, and of which the equilibrium hydrogen pressure with the alloy, for a hydrogen insertion into the alloy of 0.5 H/Metal at 40&#xb0;, is less than 0.7 bar, and b) a yttrium-based compound in a mixture with alloy a).

Alkaline electrolyte storage battery having an anode formed of an active material composition

A non-sintered electrode containing a two-dimensional conductive support covered in a layer containing an electrochemically active material and a binder which is a mixture of a styrene-acrylate copolymer and a cellulose compound chosen from methylcellulose, carboxymethylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose and hydroxyethylcellulose. The proportion of the styrene-acrylate copolymer is less than 4% by weight of the active layer.

Non-sintered electrode of nickel hydroxide in a binder of cellulose compound and styrene-acrylate co-polymer for an electrochemical generator

A positive active material for nickel electrodes of alkaline storage batteries consists of particles of hydroxide containing mainly nickel and covered with a layer of a hydroxide phase based on nickel and yttrium. The proportion of the hydroxide phase is in the range 0.15% to 3% by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles.

Positive active material for alkaline electrolyte storage battery nickel electrodes

An electrode conductive material includes a non-stoichiometric oxidized cobalt compound whose electrical conductivity is greater than 5&times;10 S/cm and which has a direct spinel structure and formula Co Co O , with 0.73&lE;&lE;0.80 and 1.87&lE;y&lE;1.95. An alkaline electrolyte secondary storage cell positive electrode includes a current collector and a layer containing a binder, particles of an electrochemically active material and the aforementioned conductive material, the proportion by weight of the conductive material in the layer being from 4% to 10% of the active material.

Electrode conductive material

The present invention relates to a non-sintered nickel electrode for a secondary cell having an alkaline electrolyte. The electrode has a current collector and a paste comprising a powder active material based on nickel hydroxide, a conductive material containing lithium and cobalt, and a binder. The active material is made up of particles of a hydroxide containing a majority of nickel that is at least partially oxidized into a &bgr; structure oxyhydroxide, said particles being at least partially coated in lithiated oxide of nickel and cobalt.

Non-sintered nickel electrode for a secondary electro-chemical cell having an alkaline electrolyte

A non-sintered nickel electrode contains a conductive support and a paste comprising an electrochemically active material containing nickel hydroxide and a binder which is a mixture of an elastomer and a crystalline polymer. The proportion of the elastomer is in the range 25% to 60% by weight of the binder and the proportion of the crystalline polymer is in the range 40% to 75% by weight of the binder.

Non-sintered nickel electrode

A non-sintered nickel electrode for alkaline electrolyte storage cells including a current collector and a paste containing an active material based on nickel hydroxide and a conductive material, wherein said conductive material is a lithium-containing cobalt and nickel oxide whose degree of oxidation obtained after electrochemical conditioning is stable after prolonged storage in the alkaline electrolyte.

Non-sintered nickel electrode for an alkaline electrolyte secondary electrochemical cell

Nickle positive electrode for an alkaline storage cell

A method of manufacturing a positive active material for nickel electrodes of alkaline storage batteries which consists of particles of hydroxide containing mainly nickel and covered with a layer of a hydroxide phase based on nickel and yttrium is disclosed. The proportion of the hydroxide phase is in the range 0.15% to 3% by weight of yttrium expressed as yttrium hydroxide relative to the total weight of particles.

Positive active material for alkaline electrolyte storage battery nickel

The present invention provides a paste type nickel electrode for a storage cell having an alkaline electrolyte, the electrode comprising a current collector and a paste containing a nickel-based hydroxide and an oxidized compound of cobalt syncrystallized with at least one other element, wherein said hydroxide forms a first powder and wherein said compound forms a second powder distinct from said first powder, said powders being mixed mechanically within said paste.

Paste type nickel electrode containing a cobalt compound and at least

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Bordeaux, France

Patrick Bernard