Electrolysis system for carbon dioxide

An electrolysis system for carbon dioxide utilization, the system comprising:

• an electrolysis cell having an anode in an anode chamber, a cathode in a cathode chamber, and a filter unit;
• wherein the cathode chamber takes up an electrolysis reactant comprising carbon dioxide and passes it in front of the cathode;
• wherein the cathode comprises an electrode or catalyst material to reduce carbon dioxide to at least one of a hydrocarbon compound, carbon monoxide, or a formate;
• and
• wherein the filter unit comprises a catalytic filter system with a catalyst material at least partially immobilized on a surface of the cathode;
• wherein the catalyst material of the catalytic filter system is not electroreductively catalytically active;
• and
• wherein the catalytic filter system includes a functionalized complex or a functionalized support material which catalyzes a cleavage reaction to convert any formate present to:
• (a) hydrogen and carbon dioxide, or (b) water and carbon monoxide.