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Received May 7, 2014
Accepted September 24, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Copyright © KIChE. All rights reserved.
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Effect of Pt coverage in Pt-deposited Pd nanostructure electrodes on electrochemical properties
Department of Chemical Engineering, Soongsil University, Seoul 156-743, Korea
kwpark@ssu.ac.kr, snow7292@naver.com
Korean Journal of Chemical Engineering, June 2015, 32(6), 1075-1080(6), 10.1007/s11814-014-0287-9
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Abstract
We have fabricated Pt-deposited Pd electrodes via a two-gun sputtering deposition system by separately operating Pd and Pt target as a function of sputtering time of Pt target. For Pt-deposited Pd electrodes (Pd/Pt-X), Pd were first deposited on the substrates at 20 W for 5min, followed by depositing Pt on the Pd-only electrodes as a function of sputtering time (X=1, 3, 5, 7, and 10min) at 20W on the Pt target. As the sputtering time of Pt target increased, the portion of Pt on the Pd electrodes increased, representing an increased coverage of Pt on the Pd electrodes. The Pd/Pt-7 electrode having an optimized Pt coverage exhibits an excellent electrocatalytic activity for methanol oxidation reaction.
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References
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