Electrochemical reaction device

Abstract

An electrochemical reaction device, includes: 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 storing part; an oxidation electrode disposed in the second storing part; a porous body disposed in the first storing part; and a flow path connecting the porous body and an outside of the electrolytic solution tank to supply gas containing carbon dioxide to the porous body.

What is claimed is: 
     
         1 . 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 storing part;   an oxidation electrode disposed in the second storing part;   a porous body disposed in the first storing part; and   a flow path connecting the porous body and an outside of the electrolytic solution tank to supply gas containing carbon dioxide to the porous body.   
     
     
         2 . An electrochemical reaction device, comprising:
 a first electrolytic solution tank comprising 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 storing part;   an oxidation electrode disposed in the first storing part;   a second electrolytic solution tank comprising a third storage part to store a third electrolytic solution containing carbon dioxide higher in concentration than the first electrolytic solution;   a first flow path connecting the first storage part and the third storage part;   a porous body disposed in the third electrolytic solution; and   a second flow path connecting the porous body and an outside of the second electrolytic solution tank to supply gas containing carbon dioxide to the porous body.   
     
     
         3 . The device of  claim 2 , further comprising:
 a pressure regulator increasing a pressure in the third storage part.   
     
     
         4 . The device of  claim 2 , further comprising:
 a third electrolytic solution tank comprising a fourth storage part to store a fourth electrolytic solution containing water;   a third flow path connecting the third storage part and the fourth storage part;   a second porous body disposed in the fourth electrolytic solution; and   a fourth flow path connecting the second porous body and an outside of the third electrolytic solution tank to recover gas containing oxygen from the fourth electrolytic solution via the second porous body.   
     
     
         5 . The device of  claim 4 , further comprising:
 a pressure regulator increasing a pressure in the third storage part or the third flow path and reducing a pressure in the fourth flow path.   
     
     
         6 . The device of  claim 1 ,
 wherein the porous body has a hydrophobic property or water repellency.   
     
     
         7 . The device of  claim 1 ,
 wherein a pore size of the porous body is 1 μm or less.   
     
     
         8 . The device of  claim 1 , further comprising:
 a photoelectric conversion body having a first surface connected to the reduction electrode and a second surface connected to the oxidation electrode.   
     
     
         9 . The device of  claim 1 , further comprising:
 an ion exchange membrane provided between the first storage part and the second storage part.