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Structure and size control of FePtCu nanocatalysts for high performance hydrogen evolution reaction

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Abstract

Pt-based nanostructures with low Pt content are attractive electrocatalysts for high-efficiency hydrogen evolution reaction. It's a challenge to simultaneously tailor the structure and size of Pt-based alloys in a simple manner and boost their electrocatalytic efficiency. Here, we report the synthesis of high performance Fe45Pt35Cu20 nanoparticles (NPs) with a well-controlled size and crystal structure by a simple organometallic method. Size control of the particles was realized in the range of 8 nm to 27 nm by simply varying the type of Fe precursor, and with the increase of particle size the Fe45Pt35Cu20 alloys exhibited a higher degree of chemical ordering (fct phase, namely L10 structure). The FePtCu nanoparticles showed superior catalytic activity and stability towards the hydrogen evolution reaction with a notably low Tafel slope of 24 mV dec−1 (0.5 M H2SO4) in comparison to commercial Pt/C catalysts. The work provides a simple strategy for tailoring the size and crystal phase of Pt based nanostructures to facilitate their promising application in catalytic reactions.

Graphical abstract: Structure and size control of FePtCu nanocatalysts for high performance hydrogen evolution reaction

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Article information


Submitted
20 Jan 2020
Accepted
23 Mar 2020
First published
24 Mar 2020

Sustainable Energy Fuels, 2020, Advance Article
Article type
Paper

Structure and size control of FePtCu nanocatalysts for high performance hydrogen evolution reaction

T. Wu, X. Chen, Y. Wang, H. Wang, Y. Liu, J. Chang, H. Wan, S. Cheng and H. Wang, Sustainable Energy Fuels, 2020, Advance Article , DOI: 10.1039/D0SE00107D

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