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High performance octahedral PtNi/C catalysts investigated from rotating disk electrode to membrane electrode assembly

  • Bing Li
  • Jue Wang
  • Xin Gao
  • Congwei Qin
  • Daijun Yang
  • Hong Lv
  • Qiangfeng Xiao
  • Cunman Zhang
Research Article
  • 13 Downloads

Abstract

Octahedral PtNi/C catalysts have demonstrated superior catalytic performance in oxygen reduction reaction (ORR) over commercial Pt/C with rotating disk electrode (RDE). However, it is not trivial to translate such promising results to real-world membrane-electrode assembly (MEA). In this work, we have synthesized octahedral PtNi/C catalysts using poly(diallyldimethylammonium chloride) (PDDA) as a capping agent and investigated their performance from RDE to MEA. In RDE, mass activity and specific activity of the optimized octahedral PtNi/C catalyst for oxygen reduction reaction (ORR) are nearly 19 and 28 times high of the state-of-the-art commercial Pt/C, respectively. At MEA level, the octahedral PtNi/C catalyst exhibits excellent power generation performance and durability paired with commercial Pt/C anode. Its cell voltage at 1,000 mA·cm−2 reaches 0.712 V, and maximum power density is 881.6 mW·cm−2 and its performance attenuation is also less, around 11.8% and 7% under galvanostatic condition of 1,000 mA·cm−2 for 100 h. Such results are investiaged by thermodynamic analysis and fundametal performance modeling, which indicate the single cell performance can be further improved by reducing the size of PtNi/C catalyst agglomerates. Such encouraging results have demonstrated the feasibility to convey the superior performance of octahedral PtNi/C from RDE to MEA.

Keywords

proton exchange membrane fuel cell (PEMFC) octahedral PtNi/C oxygen reduction reaction (ORR) durability membrane electrode assembly (MEA) 

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Notes

Acknowledgements

The authors appreciate the National Natural Science Foundation of China (No. 21676204) and the Program of Ministry of Science & Technology of China (No. 2018YFB0106503) for financial support.

Supplementary material

12274_2018_2211_MOESM1_ESM.pdf (4.7 mb)
High performance octahedral PtNi/C catalysts investigated from rotating disk electrode to membrane electrode assembly

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Copyright information

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Automotive Studies & Clean Energy Automotive Engineering CenterTongji University (Jiading Campus)ShanghaiChina
  2. 2.Department of Energy TechnologyAalborg UniversityAalborgDenmark

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