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Ultrafine PtCuRh nanowire catalysts with alleviated poisoning effect for efficient ethanol oxidation

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Abstract

As a green power source, direct ethanol fuel cells (DEFCs) have broad application prospects. However, most catalysts of DEFCs still exhibit defects, such as the difficulty of C–C bond cleavage, serious CO poisoning and limited catalytic activity. Here, we report ultrafine PtCuRh nanowires (NWs) with outstanding anti-CO-poisoning properties and enhanced activity. The average diameter of the ultrafine PtCuRh NWs is about 1.49 nm, effectively improving the atomic utilization efficiency (UE) of platinum. Owing to the combination of an ultrafine nanostructure, good electronic interaction and the high UE of Pt atoms, the optimized ultrafine PtCuRh NWs/C display superior electrocatalytic activity and stability compared with commercial Pt/C for the ethanol oxidation reaction (EOR). More importantly, further electrochemical results demonstrate that the incorporation of Rh is beneficial for enhancing the antipoisoning capability for some CO-like intermediates. Meanwhile, the synthetic method in this report is robust and universal, and can also be applied to the synthesis of ultrafine trimetallic PtCuPd and PtCuIr nanowires.

Graphical abstract: Ultrafine PtCuRh nanowire catalysts with alleviated poisoning effect for efficient ethanol oxidation

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Publication details

The article was received on 13 Jul 2019, accepted on 28 Sep 2019 and first published on 01 Oct 2019


Article type: Paper
DOI: 10.1039/C9NR05954G
Nanoscale, 2019, Advance Article

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    Ultrafine PtCuRh nanowire catalysts with alleviated poisoning effect for efficient ethanol oxidation

    C. Chen, H. Xu, H. Shang, L. Jin, T. Song, C. Wang, F. Gao, Y. Zhang and Y. Du, Nanoscale, 2019, Advance Article , DOI: 10.1039/C9NR05954G

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