Carbon dioxide electrolytic device
A carbon dioxide electrolytic device comprises an electrolysis cell including: a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound; a cathode flow path which faces the cathode and through which a gas containing the carbon dioxide flows; an anode to oxidize a second substance containing water or a hydroxide and thus produce a second product containing oxygen; an anode flow path which faces the anode and through which an electrolytic solution containing the water or the hydroxide flows; a water-repellent porous body which faces the anode flow path and through which the second product flows; and a separator provided between the anode and the cathode.
1. A carbon dioxide electrolytic device comprising an electrolysis cell including:
a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound;
a cathode flow path which faces the cathode and through which a gas containing the carbon dioxide flows;
an anode to oxidize a second substance containing water or a hydroxide and thus produce a second product containing oxygen;
an anode flow path which faces the anode and through which an electrolytic solution containing the water or the hydroxide flows;
a water-repellent porous body which faces the anode flow path and through which the second product flows;
a separator provided between the anode and the cathode, and
the anode flow path being disposed between the anode and the water-repellent porous body.
2. The device according to claim 1 ,
wherein the water-repellent porous body has a sheet shape.
3. The device according to claim 1 ,
wherein the cathode, the separator, the anode, and the water-repellent porous body are stacked on one another.
4. The device according to claim 1 ,
wherein the water-repellent porous body has conductivity.
5. The device according to claim 1 ,
wherein the electrolysis cell further includes
a hydrophilic porous body on the water-repellent porous body.
6. The device according to claim 1 ,
wherein the electrolysis cell further includes:
a first flow path plate having the cathode flow path; and
a second flow path plate having the anode flow path, and
the first flow path plate has a first land on the anode,
the second flow path plate has a second land on the cathode, and
the second land overlaps the first land.
7. The device according to claim 1 ,
wherein the electrolysis cell further includes
a flow path plate having the anode flow path, and
the flow path plate has a second water-repellent porous body which faces the anode flow path and through which the second product flows.
8. The device according to claim 1 ,
wherein the electrolysis cell further includes
a second anode flow path which faces the water-repellent porous body, to discharge the second product through the water-repellent porous body, and
the water-repellent porous body is provided between the anode flow path and the second anode flow path.
9. The device according to claim 8 ,
wherein the electrolysis cell has
a third flow path plate having the second anode flow path, and
the third flow path plate is stacked on the water-repellent porous body.
10. The device according to claim 8 ,
wherein the electrolysis cell further includes:
a first flow path plate having the cathode flow path;
a second flow path plate having the anode flow path; and
a third flow path plate having the second anode flow path, and
the first flow path plate has a first land on the anode,
the second flow path plate has a second land on the cathode,
the second land overlaps the first land, and
the second anode flow path overlaps the second land.
11. The device according to claim 1 , further comprising
a discharge flow path to discharge the second product from the anode flow path.
12. The device according to claim 1 , further comprising
a second discharge flow path to discharge the second product through the water-repellent porous body.
13. The device according to claim 1 , further comprising:
a tank to store the electrolytic solution; and
a circulation flow path to supply a fluid to be discharged through the water-repellent porous body to the tank.
14. The device according to claim 1 , further comprising
a circulation flow path to supply a fluid to be discharged through the water-repellent porous body to the cathode flow path.
15. A carbon dioxide electrolytic device comprising an electrolysis cell including:
a cathode to reduce a first substance containing carbon dioxide and thus produce a first product containing a carbon compound;
a cathode flow path which faces the cathode and through which a gas containing the carbon dioxide flows;
an anode to oxidize a second substance containing water or a hydroxide and thus produce a second product containing oxygen;
an anode flow path which faces the anode and through which an electrolytic solution containing the water or the hydroxide flows;
a water-repellent porous body which faces the anode flow path and through which the second product flows;
a separator provided between the anode and the cathode; and
a flow path plate having a second anode flow path which faces the water-repellent porous body, to discharge the second product through the water-repellent porous body, the flow path plate being stacked on the water-repellent porous body, and
the water-repellent porous body being provided between the anode flow path and the second anode flow path.