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Research Article

Platinum nickel alloy-MXene catalyst with inverse opal structure for enhanced hydrogen evolution in both acidic and alkaline solutions

Wei kong1,2Lihong Li1,3( )Xiaoxia Yu2Zhongyuan Xiang1Yawei Cao2Muhammad Tahir1Zehua Lu2Jinxia Deng2Yanlin Song1( )
Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing 100190, China
School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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Graphical Abstract

This work displays the design of a three-dimensional (3D) porous P-Pt3Ni-Ti3C2Tx4% inverse opals arrays catalyst for hydrogen evolution reaction (HER), which shows superior electrocatalytic performance in terms of a low overpotential of 25 mV (10 mA·cm−2), a low Tafel slope of 22.86 mV·dec−1 in an acidic solution and a low overpotential of 44.1 mV (10 mA·cm−2), a low Tafel slope of 39.06 mV·dec−1 in an alkaline solution as well as excellent stability.

Abstract

The development of an efficient Pt-based electrocatalyst in acidic and alkaline electrolytes is of great significance to the field of electrocatalytic hydrogen evolution. Herein, we report a strategy for in situ growth of Pt3Ni truncated octahedrons on Ti3C2Tx nanosheets and then obtain an ordered porous catalyst via a template method. Meanwhile, we use the finite element calculation to clarify the relationship between the component structure and performance and find that the performance of the spherical shell microstructure catalyst is higher than that of the disc structure catalyst, which is also verified by experiments. The experimental analysis shows that the ordered porous catalyst is conducive to enhancing electrocatalytic hydrogen evolution activity in acidic and alkaline electrolytes. In an acidic solution, the overpotential is 25 mV (10 mA·cm−2), and the Tafel slope is 22.86 mV·dec−1. In an alkaline solution, the overpotential is 44.1 mV (10 mA·cm−2), and the Tafel slope is 39.06 mV·dec−1. The synergistic coupling between Ti3C2Tx and Pt3Ni nanoparticles improves the stability of the catalyst. The in situ growth strategy and design of microstructure with its correlation with catalytic performance represent critical steps toward the rational synthesis of catalysts with excellent catalytic activity.

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Nano Research
Pages 195-201
Cite this article:
kong W, Li L, Yu X, et al. Platinum nickel alloy-MXene catalyst with inverse opal structure for enhanced hydrogen evolution in both acidic and alkaline solutions. Nano Research, 2023, 16(1): 195-201. https://doi.org/10.1007/s12274-022-4667-x
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Received: 11 May 2022
Revised: 14 June 2022
Accepted: 15 June 2022
Published: 04 August 2022
© Tsinghua University Press 2022
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