Electrochemical reaction device

An electrochemical reaction device, comprising:

• an electrolytic solution tank including a first storage part to store a first electrolytic solution containing carbon dioxide, and a second storage part to store a second electrolytic solution containing water;
• a reduction electrode disposed in the first storage part and having a first surface containing a reduction catalyst;
• an oxidation electrode disposed in the second storage part having a second surface containing an oxidation catalyst;
• and
• a generator connected to the reduction electrode and the oxidation electrode, wherein a region in the first storage part between the first surface and an inner wall of the first storage part is an electrolytic solution flow path for sending the first electrolytic solution,
• wherein the electrolytic solution flow path has a first region and a second region and the first and second regions are arranged along a length direction of the electrolytic solution flow path,
• wherein the second region has a partition wall to cause a turbulent flow in the first electrolytic solution and the partition wall is in contact with the inner wall.