Partial crystallization of Co-Fe oxyhydroxides towards enhanced oxygen evolution activity

doi:10.1016/j.ijhydene.2022.03.174

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	Partial crystallization of Co-Fe oxyhydroxides towards enhanced oxygen evolution activity
	X. Bai; Y. Fan; C. M. Hou; T. M. Tang and J. Q. Guan
	2022
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	47 期号:38 页码:16711-16718
摘要	Developing high-performance noble-metal-free electrocatalysts for the oxygen evolution reaction (OER) is of great significance for the large-scale implement of electrochemical water splitting. Here, we demonstrate that cobalt-iron oxyhydroxide (CoFe0.8(OH)(x)) with appropriate crystallization exhibits excellent OER activity with a low overpotential of only 246 mV, which is much lower than that achieved on amorphous one. Kinetic experiments indicate that the OER active sites should be di-mu-oxo bridged Fe-Co, on which lower energy barrier is attained than that on Fe-O and Co-O sites. Partial crystallization is beneficial to the lattice contraction, the formation of Co-O-Fe sites, and the decrease of charge transfer resistance, thus accelerating OER process. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
DOI	10.1016/j.ijhydene.2022.03.174
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收录类别	sci
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66971
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Bai,Y. Fan,C. M. Hou,et al. Partial crystallization of Co-Fe oxyhydroxides towards enhanced oxygen evolution activity[J]. International Journal of Hydrogen Energy,2022,47(38):16711-16718.
APA	X. Bai,Y. Fan,C. M. Hou,&T. M. Tang and J. Q. Guan.(2022).Partial crystallization of Co-Fe oxyhydroxides towards enhanced oxygen evolution activity.International Journal of Hydrogen Energy,47(38),16711-16718.
MLA	X. Bai,et al."Partial crystallization of Co-Fe oxyhydroxides towards enhanced oxygen evolution activity".International Journal of Hydrogen Energy 47.38(2022):16711-16718.

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