Ha, Min Gwan Na, Youngseung Park, Hee Young Kim, Hyoung-Juhn Song, Juhun Yoo, Sung Jong Kim, Yong-Tae Park, Hyun S. Jang, Jong Hyun 2024-01-19T13:31:18Z 2024-01-19T13:31:18Z 2022-04-03 2021-11 2093-8551 https://pubs.kist.re.kr/handle/201004/116167 Electrochemical devices are constructed for continuous syngas (CO + H-2) production with controlled selectivity between CO2 and proton reduction reactions. The ratio of CO to H-2, or the faradaic efficiency toward CO generation, was mechanically manipulated by adjusting the space volume between the cathode and the polymer gas separator in the device. In particular, the area added between the cathode and the ion-conducting polymer using 0.5 M KHCO3 catholyte regulated the solution acidity and proton reduction kinetics in the flow cell. The faradaic efficiency of CO production was controlled as a function of the distance between the polymer separator and cathode in addition to that manipulated by the electrode potential. Further, the electrochemical CO2 reduction device using Au NPs presented a stable operation for more than 23 h at different H-2:CO production levels, demonstrating the functional stability of the flow cell utilizing the mechanical variable as an important operational factor. English KOREAN ELECTROCHEMISTRY SOC Y Combined Effect of Catholyte Gap and Cell Voltage on Syngas Ratio in Continuous CO2/H2O Co-electrolysis Article 10.33961/jecst.2021.00220 1 JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY, v.12, no.4, pp.406 - 414 JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY 12 4 406 414 N scie scopus 000729802000004 2-s2.0-85122874650 Electrochemistry Electrochemistry Article ELECTROCHEMICAL REDUCTION CARBON CAPTURE ELECTROCATALYTIC REDUCTION AU NANOPARTICLES ELECTROREDUCTION SELECTIVITY CONVERSION CATALYSTS ALLOY Electrocatalysis CO2 Reduction Syngas Device Membrane Electrode Assembly