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Vol.47, No.7, 454 ~ 460, 2009
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| Title |
| Synthesis and Oxygen Reduction Reaction Evaluation of 20% Pt/C for Polymer Electrolyte Fuel Cell |
| 김진환 Jin Hwan Kim , 강석민 Suk Min Kang , Dilip. R. Thube , 류호진 Ho Jin Ryu |
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| Abstract |
| In order to commercialize Polymer Electrolyte Fuel Cell (PEFC), the cathode catalyst such as Platinum supported Carbon (Pt/C) need to have a high activity of Oxygen Reduction Reaction (ORR). In this study, the 20% Pt/C was synthesized using the chemical reduction method while the crystallinity of Platinum (Pt) particles were controlled under heat treatment conditions. The activity of synthesized Pt catalysts was evaluated using electrochemical measurement. Compared with the i(ORR) at 0.8 V of 20% Pt/C heat-treated at 500℃ and the 20% Pt/C that were not heated and commercial 20% Pt/C, the i(ORR) at 0.8 V of 20% Pt/C heat-treated at 500℃ was 9.5 and 1.7 times higher than those of the 20% Pt/C and commercial 20% Pt/C that were not heated. It was considered that the crystallinity and particle size affect the ORR activity of the Pt/C catalysts. |
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| Key Words |
| Polymer electrolyte fuel cell, PEFC, cathode catalyst, oxygen reduction reaction activity, Platinum, crystallinity |
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