Alcatel

Saft Groupe Sa

Saft

Centre National De La Recherche Scientifique

Alcatel Alsthom Compagnie Generale D'electricite

Universite Paris Xii Val De Marne

Université De Paris Xii Val De Marne

Claudette Audry

Patrick Bernard

Andre Lecerf

Christian Jordy

Philippe Biensan

Philippe Desprez

Georges Caillon

Jean-Pierre Boeuve

Thierry Hezeque

Mélanie Dendary

Michel Latroche

Stephane Senyarich

Francoise Ducatel

Michelle Baudry

Jean-Paul Peres

Stéphanie Chevalier

Fermin Cuevas

Stephane Gillot

Rune Sjövall

Frederic Chouquais

Jerry Gottfridsson

Olivier Jan

Björn Marlid

Grard Duperray

André Lecerf

Stéphane Gillot

Frédéric Chouquais

The hydration of cadmium oxide in the presence of nickel acetate gives the possibility of obtaining a compound of general formula CdNi(OH)(CHCO)with 0&#x3c;x&#x2266;0.05 and 0&#x3c;y&#x2266;0.10. This compound may be advantageously, used as an electrochemically active material of an anode of the envelope type of a nickel cadmium generator. This anode does not contain any sulfates responsible for the formation of short-circuits. Further, this anode has a high electrochemical yield. A method for preparing this compound and the anode is described.

Active material of a nickel-cadmium generator negative electrode

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 manufacturing process for this alloy.

Active material composition for the negative electrode of a lithium-ion accumulator

A compound for use as active material of a positive electrode of a lithium-ion cell. This compound has an average discharge voltage above 4.5V in relation to the Li+/Li couple of approximately 4.7V. The compound includes: a) a spinel-type crystalline phase of formula LiNiMnMnMOin which elements Ti and Al, or a mixture of these; 0.8&#x3c;a&#x3c;1.3; 0&#x3c;x&#x2266;0.15; 0&#x3c;y&#x2266;0.15; b) a cubic crystalline phase of formula LiNiO in which 0&#x2266;t&#x2266;1; and c) a rhomboedric crystalline phase of formula LiNiOin which 0&#x2266;z&#x2266;1.

Insertion compound able to be used as cathodic active material of a lithium rechargeable electrochemical cell

An electrochemically active material resulting from substituting a portion of the nickel in a single-phase composite oxide of nickel and lithium of the LiNiOtype, characterized in that the active material satisfies the formula:Li(MLiMM)Oin which: 0.02&#x3c;a&#x2266;0.25; 0&#x2266;b&#x3c;0.30; 0&#x2266;c&#x3c;0.30; (a+b+c)&#x3c;0.50; Mis at least one element selected from Al, B, and Ga; Mis at least one element selected from Mg and Zn; andM=NiCoMnMin which Mis at least one element selected from Fe, Cu, Ti, Zr, V, Ga, and Si; and 0&#x2266;x&#x3c;0.70; 0.10&#x2266;y&#x3c;0.55; 0&#x2266;z&#x3c;0.30; and 0.20&#x3c;(1-x-y-z); b+c+z&#x3e;0; and in that said active material, regardless of its state of charge, satisfies the relationship:0.40&#x3c;R&#x3c;0.90, where:=(1-a-b-c)*[3-[(n/n)/(4-2-3)]*(2--2)]in which: nis the lithium content expressed in moles; nis the sum of the contents of Ni, Mn, Co, and Mexpressed in moles; and dis the overall degree of oxidation of M.

Electrochemically active material for the positive electrode of an electrochemically rechargeable lithium cell

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

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

The present invention concerns a nickel electrode comprising a nickel-based hydroxide which satisfies at least one of the following criteria:

Nickel electrode for an alkaline storage cell

A method of preparing a powder of YBaCuO [phase 123] suitable for forming by drawing-lamination, which includes:

Method of preparing YBa.sub.2 Cu.sub.3 O.sub.7 powder for forming by

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Bruges, France

Claudette Audry