Citation: Shili Xie, Fei Li, Suxian Xu, Jiayuan Li, Wei Zeng. Cobalt/iron bimetal-organic frameworks as efficient electrocatalysts for the oxygen evolution reaction[J]. Chinese Journal of Catalysis, ;2019, 40(8): 1205-1211. doi: S1872-2067(19)63384-X shu

Cobalt/iron bimetal-organic frameworks as efficient electrocatalysts for the oxygen evolution reaction

Shili Xie ^a, ,
Fei Li ^a ,
Suxian Xu ^a ,
Jiayuan Li ^a ,
Wei Zeng ^b

a State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China;
b Dalian Wondersun Biochemical Technology Co., LTD, Dalian 116600, Liaoning, China

Received Date: 14 March 2019
Revised Date: 19 April 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (21872016), and the Fundamental Research Funds for the Central Universities (DUT17ZD204).

The development of high efficiency and stable electrocatalysts for oxygen evolution is critical for energy storage and conversion systems. Herein, a series of Co/Fe bimetal-organic frameworks (MOFs) were fabricated using a facile ultrasonic method at room temperature, as electrocatalysts for the oxygen evolution reaction (OER) in alkaline solution. The Co₂Fe-MOF exhibited an overpotential of 280 mV at a current density of 10 mA cm^-2, a low Tafel slope of 44.7 mV dec^-1, and long-term stability over 12000 s in 1 mol L^-1 KOH. This impressive performance was attributed to the high charge transfer rate, large specific surface area, and synergistic effects of the cobalt and iron centers.
- Bimetal-organic frameworks,
- Oxygen evolution reaction,
- Electrocatalysts,
- Synergetic effect,
- Ultrasonic method
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