Patent ID: 11965254
Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A low-power electrochemical apparatus for producing a synthetic gas, comprising:
a cathode unit, which comprises a first supply unit for supplying a carbon dioxide-containing reduction fuel, a cathode for reducing the carbon dioxide, a catholyte spacer in contact with the cathode and containing a catholyte, and a first outlet located at one end of the catholyte spacer and discharging a H2/CO synthetic gas containing H2 and CO by reducing the carbon dioxide-containing reduction fuel;
an anode unit, which comprises a second supply unit for supplying an oxidation fuel containing a nitrogen compound, an anode for oxidizing the nitrogen compound, an anolyte spacer in contact with the anode and containing an anolyte, and a second outlet located at one end of the anolyte spacer and discharging a nitrogen compound-containing oxidation product;
an ion exchange unit, which comprises an ion exchange membrane, interposed between the catholyte spacer and the anolyte spacer; and
a power unit for applying a constant current to the cathode and the anode,
wherein the cathode and the anode are gas diffusion electrodes comprising a catalyst layer,
wherein the catalyst layer of the cathode is Au,
wherein the catalyst layer of the anode is Pt,
wherein the power unit adjusts a current density of the constant current in a range of 1 mA cm−2 to 10 A cm−2 to control a H2/CO ratio of the synthetic gas in a range of 0.25 to 30, and as the current density of the constant current increases, the H2 ratio in the discharged H2/CO synthetic gas increases.