| 초록 |
For electrochemical CO2 conversion, SnO2 GDE treated with H2 was used. The SnO2 was chosen for catalyst material because of its stability under electrochemical conditions and synthesized with the hydrothermal method. It's simple and can make metal doping easier for better performance of the electrode. And as-synthesized SnO2 was sprayed on carbon paper. Sparying has some advantages; minimal oxide content, rapid solidification, and easy deposition. Using this electrode, the CO2RR was performed in a GDE reactor. GDE forms the triple-phase boundary in the electrode interior; a place of the reaction between gas, electrolyte, and catalyst. It makes the more surface area of the support, a direct feed of CO2 to the cell, and higher current density. Moreover, compared to plate electrodes, using of metal is reduced. Finally, the electrode was treated with H2. Although electrocatalysis treated with H2 isn't common like photocatalysis, but it was conducted for improving catalysis. |
