Bipolar electrode-electrolyte unit

Bipolar electrode stack comprising a plurality of bipolar electrode-electrolyte units which are electrically connected in series, each of said bipolar electrode-electrolyte units comprising a barrier layer, at least two carrier layers and at least two active layers and an electrolyte, wherein

• the active layers comprise an electroactive material with low resistance and high capacitance;
• the barrier layer is electrically conducting, is impermeable to matter, and is made of a material selected from the group consisting of compressed carbon, impregnated carbon, compressed and impregnated carbon, plastic-bonded carbon;
• and carbon-coated sheet metal;
• the carrier layers, each located between a barrier layer and an active layer, form an electrically conducting porous three-dimensional structure with a large specific and geometric surface that contains a material selected from the group consisting of carbon fiber papers, carbon fiber films, carbon fiber mats, carbon fiber fabrics, compressed graphite flakes and carbon fibers, conducting plastic, and carbon produced by pyrolysis or dehydration of organic materials;
• the barrier layer and carrier layer form a bond produced by gluing, rolling, or pressing that is stable, mechanical and electrically conducting;
• and
• the electrolyte is a good electrical conductor.