Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Characteristics of Pt/C Nano-catalyst Synthesized by Arc Plasma Deposition

아크 플라즈마 증착공정을 통한 Pt/C 나노촉매 합성 및 특성평가

  • Joo, Hye-Sook (Department of Metallurgical Engineering, Yonsei University) ;
  • Choi, Han-Shin (Korea institute of rare matels, Korea Institute of Industrial Technology) ;
  • Ha, Heon-Phil (Center for materials architecturing, Korea Institute of Science & Technology) ;
  • Kim, Do-Hyang (Department of Metallurgical Engineering, Yonsei University)
  • Received : 2011.11.07
  • Accepted : 2011.12.29
  • Published : 2012.02.28
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Abstract

Electricity is generated by the combined reactions of hydrogen oxidation and oxygen reduction which occur on the Pt/C catalyst surface. There have been lots of researches to make high performance catalysts which can reduce Pt utilization. However, most of catalysts are synthesized by wet-processes and a significant amount of chemicals are emitted during Pt/C synthesis. In this study, Pt/C catalyst was produced by arc plasma deposition process in which Pt nano-particles are directly deposited on carbon black surfaces. During the process, islands of Pt nano-particles were produced and they were very fine and well-distributed on carbon black surface. Compared with a commercialized Pt/C catalyst (Johnson & Matthey), finer particle size, narrower size distribution, and uniform distribution of APD Pt/C resulted in higher electrochemical active surface area even at the less Pt content.

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