Well-dispersed Pd3Pt1 alloy nanoparticles in large pore sized mesocellular carbon foam for improved methanol-tolerant oxygen reduction reaction
SCIE
SCOPUS
- Title
- Well-dispersed Pd3Pt1 alloy nanoparticles in large pore sized mesocellular carbon foam for improved methanol-tolerant oxygen reduction reaction
- Authors
- An Sunhyung; Park, JH; Shin, CH; Joo, J; Ramasamy, E; Hwang Jongkook; Lee, J
- Date Issued
- 2011-04
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Oxygen reduction reaction (ORR) catalysts, Pd3Pt1 nanoparticles with methanol tolerance, are supported on various carbon supports: mesocellular carbon foam (MSU-F-C), CMK-3, and Vulcan XC-72. The particle size of Pd3Pt1 (similar to 5 nm) is larger than the pore size of CMK-3 (similar to 3 nm), resulting in the agglomeration of Pd3Pt1 nanoparticles on the external surface of the CMK-3. The large surface area and large pore size of MSU-F-C allows a high degree of dispersion of Pd3Pt1 nanoparticles inside the pores. Due to its highly dispersed state, the Pd3Pt1/MSU-F-C shows higher ORR activity than Pd3Pt1/Vulcan XC-72 and Pd3Pt1/CMK-3. The charge transfer resistance (R-ct), as measured by electrochemical impedance spectroscopy, increases in the order of Pd3Pt1/CMK-3 > Pd3Pt1/Vulcan XC-72 > Pd3Pt1/MSU-F-C, Pd3Pt1/MSU-F-C is methanol tolerant at 400 rpm in the presence of 0.5 M CH3OH, while methanol oxidation peaks are observed in the case of Pd3Pt1/Vulcan XC-72 and Pd3Pt1/CMK-3. (C) 2010 Elsevier Ltd. All rights reserved.
- Keywords
- ORDERED MESOPOROUS CARBON; FUEL-CELL APPLICATIONS; DIBLOCK COPOLYMER; MOLECULAR-SIEVES; THIN-FILM; LOW-COST; CATALYSTS; ELECTROCATALYST; PLATINUM; TRANSFORMATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16878
- DOI
- 10.1016/J.CARBON.2010.11.016
- ISSN
- 0008-6223
- Article Type
- Article
- Citation
- CARBON, vol. 49, no. 4, page. 1108 - 1117, 2011-04
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- There are no files associated with this item.
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