Current-Conducting Electrode And Corresponding Manufacturing Process

A process for producing a metallic current collector for an electrical energy storage system, said metallic current collector being intended to come info electrical contact with an active material so as to form a conductive electrode containing an aqueous electrolytic solution, and comprising a protective conductive layer, the method comprising:

• preparation of a composition comprising 30% to 85% of a copolymer in a proportion by weight of dry matter and 70% to 15% of conductive filters in a proportion by weight of dry matter, in addition to the proportion by weight of dry matter of copolymer in order to achieve a total of 100%, diluted in a solvent in order to achieve a viscosity of 1000 mPa to 10 000 mPa at 50 rpm,
• deposition of said composition on the metallic current collector,
• first heat treatment of the covered metallic current collector at a temperature below the boiling point of the solvent,
• second heat treatment of the covered metallic current collector at a temperature above the glass transition temperature of the copolymer and above the boiling point of the solvent, said heat treatment temperature being however below the degradation temperature of the polymer.