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Electrocatalytic activity of high-entropy alloys toward oxygen evolution reaction

Published online by Cambridge University Press:  09 July 2018

Xiaodan Cui
Affiliation:
Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
Boliang Zhang
Affiliation:
Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
Congyuan Zeng
Affiliation:
Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
Shengmin Guo*
Affiliation:
Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
*
Address all correspondence to Shengmin Guo at [email protected]
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Abstract

Due to the special crystal structures and electron configurations, high-entropy alloys (HEAs) are expected to have favorable activities for electrocatalytic reactions. In this paper, a set of oxygen evolution reaction (OER) criteria are applied for the HEA-based electrocatalyst design. Specifically, FeNiMnCrCu HEA is predicted to have a better OER performance than the baseline FeCoNiCrAl HEA. To demonstrate this design approach, both FeNiMnCrCu and FeCoNiCrAl samples are prepared and tested. Their crystal structures and electrocatalytic performance are examined. This paper demonstrates the potential of using finely tuned HEAs for OER applications.

Type
Research Letters
Copyright
Copyright © Materials Research Society 2018 

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