Polypyrrole Modified Carbon-Supported Pd Catalyst for Formic Acid Electrooxidation

doi:10.11944/j.issn.1000-0518.2019.11.190065

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (11): 1317-1322.DOI: 10.11944/j.issn.1000-0518.2019.11.190065

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Polypyrrole Modified Carbon-Supported Pd Catalyst for Formic Acid Electrooxidation

YU Yancun^a^b,WANG Xian^a^c,GE Junjie^a^d,LIU Changpeng^a^d,XING Wei^a^d^*()

a Laboratory of Advanced Power Sources,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
b University of Chinese Academy of Sciences,Beijing 100049,China
c University of Science and Technology of China(USTC),Hefei 230026,China
d Jilin Province Key Laboratory of Advanced Low Carbon Power Sources,Changchun 130022,China

Received:2019-03-13 Accepted:2019-04-24 Published:2019-11-01 Online:2019-11-05
Contact: XING Wei
Supported by:
Supported by the National Natural Science Foundation of China(No.21633008, No.21733004, No.21603216), Jilin Province Science and Technology Development Program(No.20180101030JC), and

Abstract

Abstract:

The active component of active carbon-supported Pd of the anode catalyst in direct formic acid fuel cell(DFAFC) is easy to aggregate and has electrocorrosive effect on the carbon carrier, resulting in low catalytic activity and stability. In this paper, regulating the carbon catalyst carrier effectively improved the catalytic activity and stability for formic acid electrooxidation. The polypyrrole(PPy) doped carbon was synthesized by low temperature chemical oxidation and activated carbon was added during the polymerization process. Pd catalyst supported on the carbon composites was prepared. The surface morphology of the pyropolypyrrole doped catalyst was characterized. It is found that the Pd nanoparticles could be stabilized at 2.25 nm. The surface nitrogen element of the catalyst exists in the form of pyrrole nitrogen. The carbon-based pyrolytic polypyrrole supported Pd has excellent performance for the formic acid electrocatalytic oxidation. Compared with the Pd/C catalyst, the specific activity per Pd unit mass is increased by 2.5 times.

Key words: fuel cell, formic acid, electrooxidation, polypyrrole, Pd catalyst

YU Yancun,WANG Xian,GE Junjie,LIU Changpeng,XING Wei. Polypyrrole Modified Carbon-Supported Pd Catalyst for Formic Acid Electrooxidation[J]. Chinese Journal of Applied Chemistry, 2019, 36(11): 1317-1322.

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Polypyrrole Modified Carbon-Supported Pd Catalyst for Formic Acid Electrooxidation

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