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首页> 外文期刊>Journal of Applied Polymer Science >Study of Electrocatalysts for Oxygen Reduction Based on Electroconducting Polymer and Nickel
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Study of Electrocatalysts for Oxygen Reduction Based on Electroconducting Polymer and Nickel

机译：基于导电聚合物和镍的还原氧电催化剂的研究

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摘要

The properties and electrocatalytic activity were studied of composite carbon-supported materials based on heterocyclic polymer and nickel, in particular carbon/polyanilineickel, carbon/polypyrroleickel, carbon/poly(3-methylthiophene)ickel, as well as their precursors, carbon/polyaniline, carbon/polypyrrole, and carbon/poly(3-methylthiophene). The materials were characterized by means of thermogravimetric analysis (TGA), scanning electron microscopy (SEM), EDAX, and electrochemical methods, such as cyclic voltammetry and linear voltammetry using RDE. SEM show porous materials, with a particle size of around 0.3 lm. It was found that in nickel-modified catalysts between 5 and 6 wt % of nickel is obtained. TGA and FTIR show that the modification with nickel alters the polymer bonds. Curves from cyclic voltammetry show cathodic peaks corresponding to the oxygen reduction reaction (ORR) in all materials, occurring at relatively low potentials. Based on the potential range for ORR as well as kinetic parameters obtained from linear voltammetry using RDE, it was concluded that C-Ppy-Ni shows the best performance for ORR in acidic medium.
机译：研究了基于杂环聚合物和镍的复合碳负载材料的性能和电催化活性，尤其是碳/聚苯胺/镍，碳/聚吡咯/镍，碳/聚（3-甲基噻吩）/镍及其前体，碳/聚苯胺，碳/聚吡咯和碳/聚（3-甲基噻吩）。通过热重分析（TGA），扫描电子显微镜（SEM），EDAX和电化学方法（例如使用RDE的循环伏安法和线性伏安法）对材料进行表征。 SEM显示出多孔材料，其粒径约为0.3 lm。已经发现，在镍改性的催化剂中，获得了5至6重量％的镍。 TGA和FTIR表明用镍进行的修饰改变了聚合物键。循环伏安法得出的曲线显示出与所有材料中的氧还原反应（ORR）相对应的阴极峰，该峰出现在相对较低的电势下。根据ORR的潜在范围以及使用RDE线性伏安法获得的动力学参数，可以得出结论，C-Ppy-Ni在酸性介质中显示出ORR的最佳性能。

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