Solvay & Cie (Societe Anonyme)

Societe Anonyme Dite: Saft

Compagnie Generale D'electricite (Societe Anonyme)

Anne De Guibert

Etienne Hannecart

Elise Destryker

Gilles Crepy

Jean-Pierre Buchel

Veronique Danel

Xavier Andrieu

Jean Fauvarque

The invention relates to electrochemical energy storage devices containing a composition comprising an electrically conductive polymer based on polypyrrole, substituted or otherwise, and ionic groups which comprise an R-sulphate or R-sulphonate group, R denoting an alkyl or aryl radical. The invention also relates to the use of these devices as a supercapacitor or as a rechargeable generator.

Electrochemical energy storage devices comprising electricaly conductive

A process for preparing a compound using a vanadium oxide derivative for the cathode of a thermal cell. According to the invention, a powdered mixture is produced using vanadium pentoxide, a carbon, and a mixture of alkaline halides; then heat processing is conducted at a temperature ranging from 360.degree. C. to 650.degree. C. for a period ranging from 15 minutes to 2 hours inclusive. A cathode material for a thermal cell is obtained which displays a stable discharge voltage (curve A).

Process for preparing a compound using a vanadium oxide derivative for

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Paris, France

Anne De Guibert