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Nano Research 2022, 15(9): 7868-7876 https://doi.org/10.1007/s12274-022-4432-1
Research Article | Issue | Published: 14 June 2022

High-entropy alloy nanoparticles as a promising electrocatalyst to enhance activity and durability for oxygen reduction

Show Author's Information Yanan Yu1,  Fanjie Xia2,  Chengjie Wang1,  Jinsong Wu2,  Xianbiao Fu1( ),  Dongsheng Ma1,  Bencai Lin3,  Jia-ao Wang4,  Qin Yue1( ),  Yijin Kang1
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China
Department of Chemistry and the Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, TX 78712, USA
Keywords:
oxygen reduction reaction, high-entropy alloy, electrocatalyst, high durability
Topics:
Oxygen reduction reaction
Cite this article:
Yu Y, Xia F, Wang C, et al. High-entropy alloy nanoparticles as a promising electrocatalyst to enhance activity and durability for oxygen reduction. Nano Research, 2022, 15(9): 7868-7876. https://doi.org/10.1007/s12274-022-4432-1
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Abstract Full text Electronic supplementary material About this article

Developing efficient platinum-based electrocatalysts with super durability for the oxygen reduction reaction (ORR) is highly desirable to promote the large-scale commercialization of fuel cells. Although progress has been made in this aspect, the electrochemical kinetics and stability of platinum-based catalysts are still far from the requirements of the practical applications. Herein, PtPdFeCoNi high-entropy alloy (HEA) nanoparticles were demonstrated via a high-temperature injection method. PtPdFeCoNi HEA nanocatalyst exhibits outstanding catalytic activity and stability towards ORR due to the high entropy, lattice distortion, and sluggish diffusion effects of HEA, and the HEA nanoparticles delivered a mass activity of 1.23 A/mgPt and a specific activity of 1.80 mA/cmPt2, which enhanced by 6.2 and 4.9 times, respectively, compared with the values of the commercial Pt/C catalyst. More importantly, the high durability of PtPdFeCoNi HEA/C was evidenced by only 6 mV negative-shifted half-wave potential after 50,000 cycles of accelerated durability test (ADT).


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Electronic supplementary material
About this article

High-entropy alloy nanoparticles as a promising electrocatalyst to enhance activity and durability for oxygen reduction

Show Author's information Yanan Yu1, Fanjie Xia2, Chengjie Wang1, Jinsong Wu2, Xianbiao Fu1( ), Dongsheng Ma1, Bencai Lin3, Jia-ao Wang4, Qin Yue1( ), Yijin Kang1
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Nanostructure Research Center, Wuhan University of Technology, Wuhan 430070, China
Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China
Department of Chemistry and the Oden Institute for Computational Engineering and Sciences, The University of Texas at Austin, TX 78712, USA

Abstract

Developing efficient platinum-based electrocatalysts with super durability for the oxygen reduction reaction (ORR) is highly desirable to promote the large-scale commercialization of fuel cells. Although progress has been made in this aspect, the electrochemical kinetics and stability of platinum-based catalysts are still far from the requirements of the practical applications. Herein, PtPdFeCoNi high-entropy alloy (HEA) nanoparticles were demonstrated via a high-temperature injection method. PtPdFeCoNi HEA nanocatalyst exhibits outstanding catalytic activity and stability towards ORR due to the high entropy, lattice distortion, and sluggish diffusion effects of HEA, and the HEA nanoparticles delivered a mass activity of 1.23 A/mgPt and a specific activity of 1.80 mA/cmPt2, which enhanced by 6.2 and 4.9 times, respectively, compared with the values of the commercial Pt/C catalyst. More importantly, the high durability of PtPdFeCoNi HEA/C was evidenced by only 6 mV negative-shifted half-wave potential after 50,000 cycles of accelerated durability test (ADT).

Keywords: oxygen reduction reaction, high-entropy alloy, electrocatalyst, high durability

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Publication history
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Acknowledgements

Publication history

Received: 07 February 2022
Revised: 14 April 2022
Accepted: 14 April 2022
Published: 14 June 2022
Issue date: September 2022

Copyright

© Tsinghua University Press 2022

Acknowledgements

The work is supported by the National Natural Science Foundation of China (Nos. 21972016 and 21773023), National Youth Top-notch Talent Support Program of China, Sichuan Science and Technology Program (No. 2020YJ0243), Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology (No. SKLPST 202103), and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (No. 2022-K28). We thank Dr. Pawan Kumar for help in TEM EDS characterization.

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