# US 10,865,490 B2 · Carbon dioxide electrolytic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,865,490 B2 - Document ID: US10865490B2 - Status: Granted - Kind: B2 - Application number: 16/288,143 - Filed: 2019-02-28 - Published: 2020-03-19 - Granted: 2020-12-15 - Earliest claimed: 2018-09-14 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Akihiko Ono; Asahi Motoshige; Yoshitsune Sugano; Masakazu Yamagiwa; Jun Tamura; Yuki Kudo; Ryota Kitagawa; Satoshi Mikoshiba - Web page: https://patentgrep.com/patent/US10865490B2 ## CPC - C25B 15/08: Supplying or removing reactants or electrolytes; Regeneration of electrolytes - C25B 1/04: by electrolysis of water - C25B 1/23: Carbon monoxide or syngas - C25B 9/05: Pressure cells - C25B 9/13: Single electrolytic cells with circulation of an electrolyte - C25B 9/19: with diaphragms - C25B 9/23: comprising ion-exchange membranes in or on which electrode material is embedded - C25B 9/73: of the filter-press type - C25B 15/085: {Removing impurities} - Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis - C25B: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The device according to claim 1, wherein the water-repellent porous body has a sheet shape. ### Claim 3 (depends on 1) The device according to claim 1, wherein the cathode, the separator, the anode, and the water-repellent porous body are stacked on one another. ### Claim 4 (depends on 1) The device according to claim 1, wherein the water-repellent porous body has conductivity. ### Claim 5 (depends on 1) The device according to claim 1, wherein the electrolysis cell further includes a hydrophilic porous body on the water-repellent porous body. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 1) 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. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 8) 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. ### Claim 10 (depends on 8) 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. ### Claim 11 (depends on 1) The device according to claim 1, further comprising a discharge flow path to discharge the second product from the anode flow path. ### Claim 12 (depends on 1) The device according to claim 1, further comprising a second discharge flow path to discharge the second product through the water-repellent porous body. ### Claim 13 (depends on 1) 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. ### Claim 14 (depends on 1) 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. ### Claim 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.