METHOD OF PRODUCING A SELF-SUPPORTED ELECTRODE FILM IN A WET PROCESS WITHOUT ORGANIC SOLVENT

For production of electrodes in batteries, capacitors, their hybrids, as well as fuel cells or electrolyzers, a self-supported electrode film is produced by providing an aqueous dispersion of a powder mix of active material and binder polymer, drying and kneading the powder mix into a malleable substance and forming it into an electrode film by calendering. The process is useful for low-cost, large-scale production and is environ-mentally friendly, as no organic solvent is used.