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Received January 17, 2011
Accepted February 15, 2011
articles 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 unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Electrocatalytic properties of Fe-based bulk metallic glasses for hydrogen evolution reaction

Department of Materials Science and Metallurgy, Kyungpook National University, Daegu 702-010, Korea 1Department of Chemical Engineering, Kyungpook National University, Daegu 702-010, Korea
Korean Journal of Chemical Engineering, August 2011, 28(8), 1672-1676(5), 10.1007/s11814-011-0034-4
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Abstract

The electrocatalytic activity of newly developed Fe-based bulk metallic glasses was evaluated by polarization and impedance measurements in deaerated 1M KOH solution at room temperature. The electrocatalytic activity as well as the glass-forming ability of the Fe73C3Si7.3B8.5P5.7Mo2.5 alloy was improved by the partial substitution of Fe with 13.5 at% Co. In hydrogen evolution reaction, the metallic glasses exhibited higher activity than the activity of_x000D_ G14 (Fe60B10Si10Co20) metallic glass, which has been reported to be comparable to the activity of Pt electrode. The activity was further improved after a chemical pretreatment in 1 M HF solution for 1 min due to the formation of cobalt-rich layer with a large effective surface area.

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