KEPCO Journal on Electric Power and Energy

  • 제5권4호
  • /
  • Pages.331-335
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  • 2019
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  • 2465-8111(pISSN)
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  • 2466-0124(eISSN)
한국전력공사 (Korea Electric Power Corporation)
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Improvement in Catalytic Activity of Ag Catalyst via Simple Mixing with Carbon

  • Choun, Myounghoon (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Baek, Ji Yun (Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology) ;
  • Eom, Taehyoung (KEPCO Research Institute, Korea Electric Power Corporation)
  • 투고 : 2019.07.26
  • 심사 : 2019.11.12
  • 발행 : 2019.12.30
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초록

In this study we investigate catalytic activity and selectivity of mixture of Ag and ketjenblack according to their ratios by product analysis and electrochemical experiments, such as cyclic voltammetry, linear sweep voltammetry and chronoamperometry. We reveal that catalytic activity toward CO2 reduction to CO is improved by simple mixing Ag nanoparticle and ketjenblack because addition of ketjenblack suppresses aggregation of Ag nanoparticles and brings increase in electrochemical active surface area. However, excess amount of ketjenblack rather inhibit the CO2 reduction to CO. These observations provide clues to develop highly active Ag catalyst or electrode toward electrochemical reduction of CO2.

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참고문헌

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