, Volume 25, Issue 11, pp 5141–5152 | Cite as

Synthesis and electrocatalytic performance of a P-Mo-V Keggin heteropolyacid modified Ag@Pt/MWCNTs catalyst for oxygen reduction in proton exchange membrane fuel cell

  • Shuping YuEmail author
  • Xiaohong Zhao
  • Guiyang Su
  • Yan Wang
  • Zhongming Wang
  • Kefei Han
  • Hong ZhuEmail author
Original Paper


In this study, the Keggin type molybdovanadophosphoric acid (PMo12-xVxO40 (x = 1,2,3), abbreviated as PMoV) modified on Ag@Pt/MWCNTs composite catalysts were successfully prepared by a chemical impregnation method. The results of physical characterization revealed that PMoV molecules were incorporated into the Ag@Pt/MWCNTs structure. The effect of the composite catalyst on oxygen reduction was studied by electrochemical analysis. The catalytic performance of the composite catalyst changed with the change of the number of the substituted vanadium atoms in the heteropolyacid. The PMo10V2 catalyst shows the best activity and stability among the three heteropolyacid-modified catalysts evaluated. When the optimum doping ratio is 20%, the electrochemically active surface area (ECSA) of the composite catalyst is 99.69 m2/gPt, and it is increased by 49.11% compared with commercial Pt/C catalysts (65.63 m2/gPt). The initial reduction potential of the composite catalyst is 0.968 V, which is shifted by 73 mV compared with the 20% Pt/C catalyst. Additionally, the mechanism of catalytic reaction is also investigated.


Heteropolyacid PMoV Platinum catalyst Oxygen reduction reaction PEMFC 



The authors gratefully acknowledge the financial supports from the National Natural Science Foundation of China (Nos. 21176022, 21176023, 21276021, and 21376022), the International S&T Cooperation Program of China (No.2013DFA51860), the National High Technology Research and Development Program of China (No. 2011AA11A273), the Program for Changjiang Scholars and Innovative Research Team in University (IRT1205), and the Fundamental Research Funds for the Central Universities (YS1406).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijingChina

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