Carbon dioxide electrolyzer module, reduction system for electrolyzing carbon dioxide, and reduction method

A carbon dioxide electrolyzer module, comprising:

• a stack assembly, formed by stacking at least two individual stack sets for electrolyzing a cathode reactant and an anode reactant to produce a reduction product;
• wherein the individual stack set further comprises:
• an ion exchange membrane, having a plurality of membrane pores and having a first surface and a second surface disposed opposite to each other;
• an anode flow channel plate, disposed on the first surface side of the ion exchange membrane, the anode flow channel plate having at least four first through-holes and an anode flow channel;
• a cathode flow channel plate, disposed on the second surface side of the ion exchange membrane, the cathode flow channel plate having at least four second through-holes corresponding to the at least four first through-holes and a cathode flow channel, wherein the anode flow channel plate and the cathode flow channel plate are combined in a manner in which the anode flow channel and the cathode flow channel are arranged facing each other;
• an anode catalyst, disposed in a first accommodating space between the ion exchange membrane and the anode flow channel plate, the first accommodating space having a first internal space for allowing the anode reactant to flow;
• a cathode catalyst, disposed in a second accommodating space between the ion exchange membrane and the cathode flow channel plate, the second accommodating space having a second internal space for allowing the cathode reactant to flow;
• and
• at least two gas barrier gaskets, disposed between the anode flow channel plate and the ion exchange membrane, and between the cathode flow channel plate and the ion exchange membrane, respectively, and having at least two third through-holes corresponding to the at least four first through-holes, for forming communication channels, so that the cathode reactant and the anode reactant are in contact with the anode catalyst and the cathode catalyst through the communication channels, respectively;
• a first end plate, disposed on one side of the stack assembly, and having a first inlet and a first outlet;
• a second end plate, disposed on the other side of the stack assembly, such that the stack assembly is sandwiched between the first end plate and the second end plate, the second end plate having a second inlet and a second outlet;
• a first insulation board, disposed between the first end plate and the stack assembly, and having a first insulation board through-hole and a first current collector plate groove corresponding to the first inlet and the first outlet;
• a second insulation board, disposed between the second end plate and the stack assembly, and having a second insulation board through-hole and a second current collector plate groove corresponding to the second inlet and the second outlet;
• and
• two current collector plates, disposed in the first current collector plate groove and the second current collector plate groove, respectively, for contacting the stack assembly.