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Chemcial Industry and Engineering 2021, Vol. 38 Issue (2) :61-68    DOI: 10.13353/j.issn.1004.9533.20200311
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Research on Preparation and Electrocatalytic Performance for Oxygen Evolution Reaction of 3D Hollow Spherical CoFe2O4@NF Composite Based on Ni Foam
Wang Hongzhi1, Gao Qi1, Su Zhan2, Yu Jinshan2, Zhang Weiguo1, Yao Suwei1
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. Tianjin Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China

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Abstract CoFe2O4@NF composite was prepared by a simple one-step hydrothermal method to decrease the overvoltage of oxygen evolution reaction(OER). Its composition and microstructure were analyzed by XRD, SEM, TEM and XPS, and its electrocatalytic performances of oxygen evolution reaction were tested by using a three-electrode system. CoFe2O4 particles gathered into hollow spherical structure and grew on Ni foam(NF) substrate. The diameter of spherical is about 4 μm and the size of CoFe2O4 particles is 40 nm approximately. In 1 mol·L-1 KOH solution, the CoFe2O4@NF composite just needs 293 mV overpotential to reach the current density of 20 mA·cm-2 with the Tafel slope of 51 mV·dec-1. In addition, after 1 000 CVs and 10 h I-t test, the electrocatalytic performance for OER of CoFe2O4@NF composite still remains high stability, which proves that the composite has a broad research prospect in the field of OER catalytic materials.
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Articles by authors
Wang Hongzhi
Gao Qi
Su Zhan
Yu Jinshan
Zhang Weiguo
Yao Suwei
KeywordsCoFe2O4   Ni foam;   3D hollow spherical structure;   oxygen evolution reaction     
Received 2020-03-29;
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Wang Hongzhi, Gao Qi, Su Zhan, Yu Jinshan, Zhang Weiguo, Yao Suwei.Research on Preparation and Electrocatalytic Performance for Oxygen Evolution Reaction of 3D Hollow Spherical CoFe2O4@NF Composite Based on Ni Foam[J]  Chemcial Industry and Engineering, 2021,V38(2): 61-68
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