CARBON DIOXIDE ELECTROLYTIC APPARATUS AND OPERATION METHOD OF CARBON DIOXIDE ELECTROLYTIC APPARATUS

Japanese Patent JP2022143987

A

To suppress deterioration of electrolytic efficiency of a carbon dioxide electrolytic apparatus.SOLUTION: A carbon dioxide electrolytic apparatus includes a cathode for reducing carbon dioxide to generate a carbon compound, an anode for oxidizing water to generate oxygen, a cathode gas flow path that faces the cathode and supplies gas containing carbon dioxide, an anode solution flow path that faces the anode and supplies an electrolytic solution containing water, and a separator provided between the anode and cathode. An aspect ratio of the cathode gas flow path defined by a ratio of a depth of the cathode gas flow path relative to a width of the cathode gas flow path is larger than 1 and smaller than 3. An average fluid depth M of the cathode gas flow path defined by a ratio of a circumference length of the cathode gas flow path relative to a cross section of the cathode gas flow path and the depth h of the cathode gas flow path satisfy a formula: h/8≤M