Exploring the Influence of Halogen Coordination Effect of Stable Bimetallic MOFs on Oxygen 
Evolution Reaction
Lu, JN (Lu, Jia-Ni)[ 1 ] ; Liu, J (Liu, Jiang)[ 1 ]*（刘江） ; Dong, LZ (Dong, Long-Zhang)[ 
1 ] ; Li, SL (Li, Shun-Li)[ 1 ] ; Kan, YH (Kan, Yu-He)[ 2 ]*; Lan, YQ (Lan, Ya-Qian)[ 1 ]*
（兰亚乾）

[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct 
Mat, 1 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] Huaiyin Normal Univ, Sch Chem & Chem Engn, Jiangsu Prov Key Lab Chem Low Dimens Mat, 
Huaian 223300, Peoples R China

CHEMISTRY-A EUROPEAN JOURNAL,201911

The energy crisis and environmental pollution have forced scientists to explore alternative 
energy conversion and storage devices. The anodic reactions of these devices are all oxygen 
evolution reactions (OER), so the development of efficient OER electrocatalysts is of great 
significance. At the same time, understanding the reaction mechanism of OER is conducive to 
the rational design of efficient OER electrocatalysts. In general, catalytic active centers 
play a direct role in OER performance. In this paper, a series of stable bimetallic metal-
organic frameworks (MOFs, named as Fe-3-Co-n-X-2, n=2, 3 and X=F, Cl, Br) with similar 
structure were synthesized by changing the halogen coordinated with the cobalt metal active 
center, aiming to investigate the influence of halogen substitution effect on OER 
performance. It was found that the OER activity of Fe-3-Co-3-F-2 is much better than Fe-3-
Co-2-Cl-2 and Fe-3-Co-2-Br-2, indicating that the regulation of the electronegativity 
change of the coordination halogen atom can regulate the coordination electron structure of 
the metal active center, thereby achieving effective regulation of OER performance.

文章链接：
https://onlinelibrary.wiley.com/doi/full/10.1002/chem.201903482

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