PHOTOELECTROCHEMICAL REACTION SYSTEM

摘要

A photoelectrochemical reaction system of an embodiment includes: a CO2 generation unit, a CO2 reduction unit, and a CO2 supply unit supplying gas containing CO2 generated in the CO2 generation unit into the CO2 reduction unit. The CO2 reduction unit includes: a stack 3 including an oxidization electrode layer 11 oxidizing H2O, a reduction electrode layer 21 reducing CO2, and a photovoltaic layer 31 provided between the electrode layers 11, 21; an electrolytic solution tank 2 storing a first electrolytic solution 4 in which the oxidization electrode layer 11 is immersed and a second electrolytic solution 5 in which the reduction electrode layer 21 is immersed; and an ion migration pathway 6 allowing ions to migrate between the first electrolytic solution 4 and the second electrolytic solution 5. The gas containing CO2 generated in the CO2 generation unit is supplied into the second electrolytic solution 5 by a gas supply pipe 51 of the CO2 supply unit.

主权项

1. A photoelectrochemical reaction system, comprising:
a CO2 generation unit generating gas containing carbon dioxide; a CO2 reduction unit comprising: a stack including an oxidization electrode layer oxidizing water, a reduction electrode layer reducing carbon dioxide, and a photovoltaic layer provided between the oxidization electrode layer and the reduction electrode layer, and performing a charge separation by light energy; an electrolytic solution tank storing a first electrolytic solution in which the oxidization electrode layer is immersed and a second electrolytic solution in which the reduction electrode layer is immersed; and an ion migration pathway allowing ions to migrate between the first electrolytic solution and the second electrolytic solution; and a CO2 supply unit comprising a gas supply pipe supplying the gas generated in the CO2 generation unit into the second electrolytic solution.