Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction 


Vol. 31,  No. 6, pp. 1577-1582, Jun.  2010
10.5012/bkcs.2010.31.6.1577


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  Abstract

A 20 wt % Pt/C is fabricated and characterized for use as the cathode catalyst in a polymer electrolyte membrane fuel cell (PEMFC). By using the polyol method, the fabrication process is optimized by modifying the carbon addition sequence and precursor mixing conditions. The crystallographic structure, particle size, dispersion, and activity toward oxygen reduction of the as-prepared catalysts are compared with those of commercial Pt/C catalysts. The most effective catalyst is obtained by ultrasonic treatment of ethylene glycol-carbon mixture and immediate mixing of this mixture with a Pt precursor at the beginning of the synthesis. The catalyst exhibits very uniform particle size distribution without agglomeration. The mass activities of the as-prepared catalyst are 13.4 mA/mPt and 51.0 mA/mPt at 0.9 V and 0.85 V, respectively, which are about 1.7 times higher than those of commercial catalysts.

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  Cite this article

[IEEE Style]

B. Lim, J. W. Kim, S. J. Hwang, S. J. Yoo, E. A. Cho, T. H. Lim, S. K. Kim, "Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction," Bulletin of the Korean Chemical Society, vol. 31, no. 6, pp. 1577-1582, 2010. DOI: 10.5012/bkcs.2010.31.6.1577.

[ACM Style]

Borami Lim, Joung Woon Kim, Seung Jun Hwang, Sung Jong Yoo, Eun Ae Cho, Tae Hoon Lim, and Soo Kil Kim. 2010. Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction. Bulletin of the Korean Chemical Society, 31, 6, (2010), 1577-1582. DOI: 10.5012/bkcs.2010.31.6.1577.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949