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Chemcial Industry and Engineering 2020, Vol. 37 Issue (5) :72-79    DOI: 10.13353/j.issn.1004.9533.20191945
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Investigation of Electrocatalytic Activity of Ni-Based/Functional MWCNTs for Urea Electrooxidation
Zhou Zhaofei, Li Jianshu, Li Xinyu, Huang Chengde
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract To improve the performance of the direct urea fuel cells, the influence of three surface-functionalized carbon nanotubes on the electrochemical oxidation of urea were investigated. The results show that the surface functional groups on carbon nanotubes and the doped non-metallic element B have great influence on the electrocatalytic performance of nickel-based electrocatalysts, which is in the order of OH-MWCNTs > NH2-MWCNTs > N-MWCNTs. The amorphous NixB/OH-MWCNTs electrocatalyst exhibits higher catalytic performance in the process of urea electrooxidation. The peak current density in cyclic voltammetry curve amounts to 109.09 mA·cm-2, which is double of the Ni/OH-MWCNTs electrode. This phenomenon may be due to the interaction between Ni and B, which causes the variation in the lattice parameters of Ni, thus enhancing the anti-poisoning properties of the catalyst and, therefore, improving the activity of the catalyst.
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Articles by authors
Zhou Zhaofei
Li Jianshu
Li Xinyu
Huang Chengde
Keywordselectrooxidation;   urea;   electrocatalyst;   functional MWCNTs;   Ni-based     
Received 2019-12-17;
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Zhou Zhaofei, Li Jianshu, Li Xinyu, Huang Chengde.Investigation of Electrocatalytic Activity of Ni-Based/Functional MWCNTs for Urea Electrooxidation[J]  Chemcial Industry and Engineering, 2020,V37(5): 72-79
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