Preparation and Characterization of Nitrogen-Riched Polymer Based Materials and the Role of Cu–N Active Site in Promoting the ORR Activity of the Catalyst

化学 化学工程 多相催化 无机化学 比表面积
作者
Lin Gu,Yuanyuan Dong,Haiyan Du,Yan Zhang,Qing Yuan,Bo Wang,Huimin Wang,Ningqiang Zhang
出处
期刊:Catalysis Surveys From Asia [Springer Science+Business Media]
卷期号:24 (3): 219-231 被引量:6
标识
DOI:10.1007/s10563-020-09299-0
摘要

A novel nitrogen-riched composite (PPYTZ/C) was firstly prepared by chemical polymerization, and then the Cu-PPYTZ/C complex was obtained by immersing the PPYTZ/C modified electrode in copper sulphate solution. For comparing the performance of the two catalysts, physical and electrochemical measurements were adopted. Wherein, physical measurements include scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). And, the electrochemical measurements include cyclic voltammetry (CV), rotating disk electrode (RDE) and rotating ring-disk electrode (RRDE), and then the above measurement results were compared with commercial Pt/C. The CV and RDE results proved that Cu-PPYTZ/C catalyst exhibits excellent performance than that of PPYTZ/C in term of ORR activities and stability. In addition, the RRDE results also indicated that Cu-PPYTZ/C is comparable to the commercialization Pt/C in term of electron transfer numbers. In conclusion, Cu-PPYTZ/C is the potential candidate for oxygen reduction reaction catalysts, which is attribute to the role of CNx-M in Cu-PPYTZ/C catalyst as the catalytic group.
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