Thomson-csf

Francis Garnier

Jean Claude Dubois

Maryse Gazard

G/e/ Rard Tourillon

Gerard Tourillon

The invention relates to electrochemical devices and in particular energy storage devices. The object of the invention is the use in such devices of at least one conductive support, covered by a polymer film, obtained by electrochemical polymerization of at least one monomer having at least one aromatic heterocycle with five links containing a single heteroatom, the polymer being in accordance with the general formula: (M.sup.+ X.sup.- y)n. The basic monomer is a pyrrole, thiophene, furan or indole and is substituted by at least one group of the alkyl, alkoxyl, hydroxyl aryl, substituted aryl, halogen, methyl trihalide, cyano, amino or dialkylamino type.

Electrochemical device which can be used for energy storage

The invention relates to the elaboration of an electrode comprising an electrochrome polymer. The invention provides an electrode coated with a polymer film obtained by electrochemical polymerization of a monomer M, said polymer corresponding to the general formula (M.sup.+ X.sup.- y)n where X.sup.- represents an anion coming from the electrolyte used for the polymerization, the monomer being either a substituted aromatic heterocycle with 5 links containing a single hetero-atom, or an indole substituted on the phenyl nucleus, the substitutions being possibly groups of the alkyl, alkoxyl, hydroxyl, aryl, substituted aryl, halogene, trihalogenomethyl, cyano, amino or dialkylamino type.

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Paris, France

Francis Garnier