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아크 플라즈마 증착공정을 통한 Pt/C 나노촉매 합성 및 특성평가
주혜숙,최한신,하헌필,김도향,Joo, Hye-Sook,Choi, Han-Shin,Ha, Heon-Phil,Kim, Do-Hyang 한국분말야금학회 2012 한국분말재료학회지 (KPMI) Vol.19 No.1
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.