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Research Article

Synergetic N-doped carbon with MoPd alloy for robust oxygen reduction reaction

Chaojie Cen§, Wenjing Tang§, Tonghui Zhao§( ), Yun Song, Yun Yang, Quanlong Xu, Wei Chen( )
Zhejiang Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China

§ Chaojie Cen, Wenjing Tang, and Tonghui Zhao contributed equally to this work.

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Graphical Abstract

The composite nanomaterial comprised of N-doped carbon and MoPd alloy (Mo-Pd@N-C) was constructed for synergistically catalyzing oxygen reduction reaction. The resulting Mo-Pd@N-C catalyst delivers a half-wave potential of 0.945 V, a negligible half-wave potential decline, and only ~ 20% of mass activity attenuation after 30,000 cycles stability test.

Abstract

Synergistic catalysis opens up a new venue to improve the comprehensive application of the catalyst. Herein, a composite catalyst (Mo-Pd@N-C) consisting of the N-doped carbon derived from pyrolysis of spherical polypyrrole and MoPd nanoparticles (NPs) was constructed to emphasize the strong metal–support interaction for robust oxygen reduction reaction (ORR). The enhanced anchoring between the MoPd NPs and the substrate, and the N-species formed on the carbon matrix make the Mo-Pd@N-C deliver excellent performance with a half-wave potential of 0.945 V (vs. reversible hydrogen electrode (RHE)) for ORR, superior than that of commercial Pt/C (0.86 V). More importantly, it shows a negligible half-wave potential decline (< 5 mV) and only ~ 20% of mass activity (MA) attenuation after 30,000 cycles stability test, obviously better than those of Pt/C (~ 70% of MA attenuation and ~ 30 mV of half-wave potential decline after only 15,000 cycles). This work highlights a novel synergistic method to prolong the life and improve the commercial prospects of the catalysts.

Keywords

synergistic catalysisoxygen reduction reactionN-doped carbonMoPd alloystability

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Nano Research
Volume 16 Issue 7,
July 2023
Pages 8996-9002
DOI: 10.1007/s12274-023-5644-8
Cite this article:
Cen C, Tang W, Zhao T, et al. Synergetic N-doped carbon with MoPd alloy for robust oxygen reduction reaction. Nano Research, 2023, 16(7): 8996-9002. https://doi.org/10.1007/s12274-023-5644-8
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Electrocatalysts

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Received: 15 February 2023
Revised: 05 March 2023
Accepted: 06 March 2023
Published: 11 April 2023
© Tsinghua University Press 2023
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