Issue 25, 2021, Issue in Progress
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RSC Advances

Three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts with high-performance towards methanol electro-oxidation reaction and oxygen reduction reaction

Junzhe Sun, ORCID logo *a   Yubo Hou,a   Xuetao Wang,a   Tianyi Kou, ORCID logo *b   Na Liu,c   Ruijie Zhanga  and  Zhonghua Zhang ORCID logo c  

* Corresponding authors

a School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, P. R. China
E-mail: haikuo527@163.com

b Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
E-mail: tkou@ucsc.edu

c Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jingshi Road 17923, Jinan, P. R. China

Abstract

Alloying with transition elements is proven to be an effective way to improve the methanol electro-oxidation reaction (MOR) and oxygen reduction reaction (ORR) activities of Pt catalysts for direct methanol fuel cells (DMFCs). Through a process of rapid solidification and two-step dealloying, we have successfully fabricated three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts, which show much enhanced electrocatalytic properties towards MOR and ORR in comparison with the commercial Pt/C catalyst. Electrochemical tests indicate that alloying with Cu presents the best ORR activities, the half-wave potential of which is 42 mV positively shifted compared with the commercial Pt/C (0.892 V vs. RHE). Meanwhile, the PtM nanowire catalysts also possess good CO tolerance as well as stability for 10 000 cycles of cyclic voltammetry scanning. This convenient preparation method is promising for the development of high performance electrocatalysts for MOR and ORR in DMFCs.

Graphical abstract: Three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts with high-performance towards methanol electro-oxidation reaction and oxygen reduction reaction

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Article information

DOI
https://doi.org/10.1039/D1RA01072G
Article type
Paper
Submitted
08 Feb 2021
Accepted
03 Apr 2021
First published
21 Apr 2021
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2021,11, 14970-14979

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Three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts with high-performance towards methanol electro-oxidation reaction and oxygen reduction reaction

J. Sun, Y. Hou, X. Wang, T. Kou, N. Liu, R. Zhang and Z. Zhang, RSC Adv., 2021, 11, 14970 DOI: 10.1039/D1RA01072G

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