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Shape-controlled Pd nanostructure catalysts for highly efficient electrochemical power sources
- Authors
- Lee, Young-Woo; Oh, Jae-Kyung; Kim, Hyun-Su; Lee, Jin-Kyu; Han, Sang-Beom; Choi, Woojin; Park, Kyung-Won
- Issue Date
- 15-Sep-2010
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Shape-control; Pd catalyst; Formic acid oxidation; Iodide reduction
- Citation
- JOURNAL OF POWER SOURCES, v.195, no.18, pp.5896 - 5901
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 195
- Number
- 18
- Start Page
- 5896
- End Page
- 5901
- ISSN
- 0378-7753
- Abstract
- We report polygonal Pd catalysts on carbon black synthesized by means of polyol process in the presence of poly(vinyl pyrrolidone) and NO(3)(-) ion. We find that the polygonal Pd/C has dominant {1 1 1} facets observed by X-ray diffraction method and transmission electron microscopy analysis. The current density for formic acid electrooxidation of polygonal Pd/C (1.908 mA cm(-2)) with controlled surface structures such as dominant {1 1 1} facets is much higher than Pd/C (0.478 mA cm(-2)) at 0 V. Furthermore, the polygonal Pd/C with controlled surface structures shows much improved performances in dye-sensitized solar cells (DSSCs) due to its highly thermal stability and enhanced catalytic activity for iodide reduction. (C) 2009 Elsevier B.V. All rights reserved.
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Related Researcher
- PARK, KYUNG WON
- College of Engineering (Department of Chemical)