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化学工业与工程 2020, Vol. 37 Issue (5) :72-79    DOI: 10.13353/j.issn.1004.9533.20191945
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镍基/功能性碳纳米管对尿素电氧化的电催化活性的研究
周兆飞, 李建树, 李新宇, 黄成德
天津大学化工学院, 天津 300072
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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摘要 为了改善直接尿素燃料电池的性能,比较了3种表面官能化的碳纳米管对尿素电化学氧化的影响。结果表明,碳纳米管的表面官能团以及掺杂的非金属元素B对镍基电催化剂的电催化性能有很大的影响。3种碳纳米管对电催化活性的影响顺序为:OH-MWCNTs > NH2-MWCNTs > N-MWCNTs。非晶态NixB/OH-MWCNTs电催化剂在尿素的电氧化中表现出高催化性能,其循环伏安曲线的峰值电流密度为109.09 mA·cm-2,是Ni/OH-MWCNTs电极的2倍。这可能是由于Ni和B之间的相互作用,引起Ni晶格参数的变化,从而增强了催化剂的抗中毒性能并提高了催化剂的活性。
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周兆飞
李建树
李新宇
黄成德
关键词电氧化   尿素   电催化剂   功能性多壁碳纳米管   镍基     
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.
Keywordselectrooxidation;   urea;   electrocatalyst;   functional MWCNTs;   Ni-based     
Received 2019-12-17;
Fund:天津市自然科学基金(16JCYBJC21100)。
Corresponding Authors: 黄成德,E-mail:cdhuang@tju.edu.cn。     Email: cdhuang@tju.edu.cn
About author: 周兆飞(1995-),男,硕士研究生,现从事燃料电池催化剂方面的研究。
引用本文:   
周兆飞, 李建树, 李新宇, 黄成德.镍基/功能性碳纳米管对尿素电氧化的电催化活性的研究[J].  化学工业与工程, 2020,37(5): 72-79
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, 2020,37(5): 72-79
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