Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction
SCIE
SCOPUS
- Title
- Fabrication and Characterization of High-activity Pt/C Electrocatalysts for Oxygen Reduction
- Authors
- LIM, BORAMI; KIM, JOUNG WOON; HWANG, SEUNG JUN; YOO, SUNG JONG; CHO, EUN AE; LIM, TAE-HOON; KIM, SOO-KIL
- Date Issued
- 2010-06-20
- Publisher
- 대한화학회
- 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/mgPt and 51.0 mA/mgPt at 0.9 V and 0.85 V, respectively, which are about 1.7 times higher than those of commercial catalysts.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/99972
- DOI
- 10.5012/bkcs.2010.31.6.1577
- ISSN
- 0253-2964
- Article Type
- Article
- Citation
- Bulletin of the Korean Chemical Society, vol. 31, no. 6, page. 1577 - 1582, 2010-06-20
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.