Study on preparation of cobalt-polypyrrole-carbon black supported Pt catalyst and its single cell performance

ZHANG Lu; LIN Rui; HUANG Zhen; FAN Ren-jie

Volume 43 Issue 03

Mar. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(03): 352-359

ZHANG Lu, LIN Rui, HUANG Zhen, FAN Ren-jie. Study on preparation of cobalt-polypyrrole-carbon black supported Pt catalyst and its single cell performance[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 352-359.

Citation:

ZHANG Lu, LIN Rui, HUANG Zhen, FAN Ren-jie. Study on preparation of cobalt-polypyrrole-carbon black supported Pt catalyst and its single cell performance[J]. Journal of Fuel Chemistry and Technology, 2015, 43(03): 352-359.

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Study on preparation of cobalt-polypyrrole-carbon black supported Pt catalyst and its single cell performance

ZHANG Lu^1,2,
LIN Rui^{1,2
,},
HUANG Zhen^1,2,
FAN Ren-jie^1,2

1.
Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China;
2.
School of Automotive Studies, Tongji University, Shanghai 201804, China

Received Date: 2014-09-09
Publish Date: 2015-03-30

Abstract

Abstract

Cobalt-polypyrrole-carbon black supported Pt catalyst (Pt/Co-PPy-C) was prepared by pulse-microwave assisted chemical reduction and used as a cathode catalyst for oxygen reduction reaction (ORR) in a single cell; the influence of operation temperature and H₂/air stoichiometric ratio on the cell performances was investigated, in comparison with the commercial Pt/C catalyst. The results indicated that the cell performs best at 70 ℃ and with a H₂/Air ratio of 1.2:2.5. During the 150 h durability test at a galvanostatic operation condition of 600 mA/cm², the voltage degradation rate with Pt/Co-PPy-C as the cathode catalyst is 0.119 mV/h, about 26% of that with the commercial Pt/C catalyst. The cathode charge transfer impedances before and after durability test are about 7.176 and 8.767 mohm, respectively, much smaller than those with the Pt/C catalyst. The average particle size of Pt in Pt/Co-PPy-C is increased from 2.46 to 3.18 nm, also smaller than that for the Pt/C catalyst. The Pt/Co-PPy-C catalyst exhibits superior performance in ORR and may have an enormous application potential in fuel cell.
- polypyrrole,
- fuel cell,
- cathode catalyst,
- single cell,
- durability,
- oxygen reduction reaction

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References

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