The utility model relates to a
carbon dioxide electro-catalytic reactor, which comprises an
anode chamber, a
cathode chamber and an
anode chamber, a
mixed gas containing
carbon dioxide and water is introduced into the
cathode chamber; the
anode chamber and the
cathode chamber are separated by the functional layer, the functional layer comprises a
cathode catalyst layer located on one side of the cathode chamber and an
anode catalyst layer located on one side of the anode chamber, and the functional layer is further provided with an anion exchange layer located between the
anode catalyst layer and the
cathode catalyst layer. According to the
carbon dioxide electro-catalytic reactor, the
mass transfer resistance of the functional layer is reduced by improving the functional layer, so that the
reaction rate and the reaction efficiency of the reactor can be improved, and the conversion rate of a
reaction system is improved. Specifically, a functional layer of a multi-layer membrane in the prior art is simplified into a
single ion exchange membrane, and a two-cavity structure is formed, so that the structure of the functional layer is simplified, and the purpose of reducing the
mass transfer resistance of the functional layer is achieved.