Method of manufacturing a multilayer electrochemical assembly comprising an electrolyte between two electrodes, and an assembly made thereby

DETAILED DESCRIPTION Consequently, an object of the present invention is to improve the theoretical concepts that have been proposed in the past so as to enable multilayer assemblies having a polymer electrolyte to be used industrially.
In the context of the present invention, this object is achieved by means of a method which comprises the following steps: extruding an element comprising at least one electrode film and an electrolyte film based on an ionic conductor polymer, the extrusion being through a die shaped in such a manner that the electrode is accessible from at least one main face of the extruded element and from no more than one of the edges of said element; spiral winding a complex based on the above-specified extruded element, the complex comprising the electrolyte layer plus two electrodes such as a cathode and an anode, disposed on respective opposite sides of the electrolyte, to form a structure having, on different edge faces thereof, means for making electrical contact with respective ones of the two electrodes; and metallizing said edge faces of the structure.