Mesoporous Mn-Fe oxyhydroxides for oxygen evolution

doi:10.1039/d2qi00722c

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	Mesoporous Mn-Fe oxyhydroxides for oxygen evolution
	J. Y. Han; M. Z. Zhang; X. Bai; Z. Y. Duan; T. M. Tang and J. Q. Guan
刊名	Inorganic Chemistry Frontiers
	2022
卷号	9 期号:14 页码:3559-3565
ISSN号	2052-1553
DOI	10.1039/d2qi00722c
英文摘要	The development of high-performance and Earth-abundant catalysts is imperative for the oxygen evolution reaction (OER), and mesoporous oxyhydroxides show huge potential as advanced catalysts toward the OER due to a large specific surface area and porous structure. Here, we adopt a facile template method to synthesize bimetallic Mn-Fe oxyhydroxides. meso-Mn1Fe1Ox shows a large BET specific surface area of 212.4 m(2) g(-1) and an average pore diameter of 13.1 nm, which favor the exposure of many active sites for the reaction. meso-Mn1Fe1Ox exhibits excellent OER performance with a low overpotential of 275 mV at 10 mA cm(-2), a small Tafel slope of 52 mV dec(-1), and good long-term stability, and is superior to most Mn-based electrocatalysts. Kinetic studies indicate that Fe and Mn sites should synergistically catalyze the OER. Theoretical calculations reveal that the surface doping of Fe onto MnOOH can moderately destabilize the surface bridge O atoms and promote the generation of surface oxygen vacancies that can act as highly active sites for the OER.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66834]
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	J. Y. Han,M. Z. Zhang,X. Bai,et al. Mesoporous Mn-Fe oxyhydroxides for oxygen evolution[J]. Inorganic Chemistry Frontiers,2022,9(14):3559-3565.
APA	J. Y. Han,M. Z. Zhang,X. Bai,Z. Y. Duan,&T. M. Tang and J. Q. Guan.(2022).Mesoporous Mn-Fe oxyhydroxides for oxygen evolution.Inorganic Chemistry Frontiers,9(14),3559-3565.
MLA	J. Y. Han,et al."Mesoporous Mn-Fe oxyhydroxides for oxygen evolution".Inorganic Chemistry Frontiers 9.14(2022):3559-3565.