| abstract |
[PROBLEMS] To improve the reduction efficiency of carbon dioxide. An electrochemical reaction device includes a first storage unit that stores a first electrolytic solution containing carbon dioxide, and a second storage unit that stores a second electrolytic solution containing water. 1 electrolytic solution tank, a reduction electrode immersed in the first electrolytic solution, an oxidation electrode immersed in the second electrolytic solution, a power source electrically connected to the reduction electrode and the oxidation electrode, and carbon dioxide A second electrolytic solution tank including a third storage unit that stores a third electrolytic solution containing the first electrolytic unit, and a flow path that connects the first storage unit and the third storage unit. The temperature of the third electrolytic solution is lower than the temperature of the first electrolytic solution. [Selection] Figure 1 |