Partially crystallized Ni-Fe oxyhydroxides promotes oxygen evolution

doi:10.1016/j.ijhydene.2022.11.118

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	Partially crystallized Ni-Fe oxyhydroxides promotes oxygen evolution
	T. M. Tang, S. H. Jiao, J. Y. Han, Z. L. Wang and J. Q. Guan
	2023
发表期刊	International Journal of Hydrogen Energy
ISSN	0360-3199
卷号	48 期号:15 页码:5774-5782
摘要	The slow oxygen evolution reaction (OER) kinetics influences hydrogen production efficiency from water splitting. To break through the bottleneck of water splitting, it is urgent to develop efficient and economic electrocatalysts. Although NiFe-based catalysts exhibit outstanding OER activity, the complicated preparation process limits their large-scale synthesis and applications. Here, partially crystallized nickel-iron oxyhydroxides are synthesized by a facile sol-gel method. When the Fe/Ni mole ratio is 0.5:1, the NiFe0.5(OH)(x) catalyst shows superior OER performance with a low OER overpotential of 265 mV and good durability. Kinetic studies show that the energy barrier of NiFe0.5(OH)(x) is only 31.5 kJ mol(-1), much smaller than those of Ni(OH)(x) (41.0 kJ mol(-1)) and Fe(OH)(x) (44.8 kJ mol(-1)). The synergistic action between Ni and Fe sites not only facilitates mass and charge transfer, but also promotes the formation of *OOH intermediate for the OER. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
DOI	10.1016/j.ijhydene.2022.11.118
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收录类别	sci
语种	英语
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67885
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	T. M. Tang, S. H. Jiao, J. Y. Han, Z. L. Wang and J. Q. Guan. Partially crystallized Ni-Fe oxyhydroxides promotes oxygen evolution[J]. International Journal of Hydrogen Energy,2023,48(15):5774-5782.
APA	T. M. Tang, S. H. Jiao, J. Y. Han, Z. L. Wang and J. Q. Guan.(2023).Partially crystallized Ni-Fe oxyhydroxides promotes oxygen evolution.International Journal of Hydrogen Energy,48(15),5774-5782.
MLA	T. M. Tang, S. H. Jiao, J. Y. Han, Z. L. Wang and J. Q. Guan."Partially crystallized Ni-Fe oxyhydroxides promotes oxygen evolution".International Journal of Hydrogen Energy 48.15(2023):5774-5782.

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