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Issue 48, 2019
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Synthesis of octahedral Pt–Ni–Ir yolk–shell nanoparticles and their catalysis in oxygen reduction and methanol oxidization under both acidic and alkaline conditions

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Abstract

Fuel cells are expected to be one of the most promising alternatives to the increasingly scarce fossil fuels, and Pt is the most commonly used catalyst for anodic and cathodic electrochemical reactions. To realize large-scale commercialization, it is most urgent to improve the efficiency of Pt and reduce the cost. Here, we synthesized an octahedral Pt–Ni–Ir yolk–shell catalyst through stepwise co-deposition (SCD), surface-limited Pt deposition (SLPD) and Ni-coordinating etching (NCE) processes. Experimental studies showed that the catalytic activities of the as-prepared trimetal yolk–shell catalyst were several times higher than that of the commercial Pt/C towards oxygen reduction and methanol oxidization under both acidic and alkaline conditions. This work may be extended to designing other multimetallic functional materials with complex hierarchical nanostructures, which is conducive to greatly enhancing the performance.

Graphical abstract: Synthesis of octahedral Pt–Ni–Ir yolk–shell nanoparticles and their catalysis in oxygen reduction and methanol oxidization under both acidic and alkaline conditions

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Publication details

The article was received on 22 Aug 2019, accepted on 16 Nov 2019 and first published on 18 Nov 2019


Article type: Paper
DOI: 10.1039/C9NR07235G
Nanoscale, 2019,11, 23206-23216

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    Synthesis of octahedral Pt–Ni–Ir yolk–shell nanoparticles and their catalysis in oxygen reduction and methanol oxidization under both acidic and alkaline conditions

    T. Yang, Y. Wang, W. Wei, X. Ding, M. He, T. Yu, H. Zhao and D. Zhang, Nanoscale, 2019, 11, 23206
    DOI: 10.1039/C9NR07235G

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