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MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nano-alloy as bifunctional oxygen electrocatalysts for zinc-air battery

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Abstract

High-entropy alloy (HEA)-based materials are expected to be promising oxygen electrocatalysts due to their exceptional properties. The electronic structure regulation of HEAs plays a pivotal role in enhancing their elctrocatalytic ability. Herein, PtFeCoNiMn nanoparticles (NPs) with subtle lattice distortions are constructed on metal-organic framework-derived nitrogen-doped carbon by an ultra-rapid Joule heating process. Thanks to the modulated electronic structure and the inherent cocktail effect of HEAs, the as-synthesized PtFeCoNiMn/NC exhibits superior bifunctional electrocatalytic performance with a positive half-wave potential of 0.863 V vs. reversible hydrogen electrode (RHE) for oxygen reduction reaction and a low overpotential of 357 mV at 10 mA·cm−2 for oxygen evolution reaction. The assembled quasi-solid-state zinc-air battery using PtFeCoNiMn/NC as air electrode shows a high peak power density of 192.16 mW·cm−2, low charge–discharge voltage gap, and excellent durability over 500 cycles at 5 mA·cm−2. This work demonstrates an effective route for rational design of bifunctional nanostructured HEA electrocatalysts with favorable electronic structures, and opens up a fascinating directions for energy storage and conversion, and beyond.

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Acknowledgements

The authors acknowledge the financial support of the Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (No. ZDSYS20210709112802010), the Shenzhen Science and Technology Innovation Commission (No. GJHZ20220913142610020), Guangdong Grants (No. 2021ZT09C064), and the National Key Research and Development Program of China (Nos. 2022YFA1503900 and 2023YFA1506600). The authors acknowledge the assistance of SUSTech Core Research Facilities.

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Authors and Affiliations

  1. Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), Shenzhen, 518055, China

    Mingkuan Xie, Xin Xiao, Chunsheng Wu, Wenjuan Wang, Hao Nian, Fayan Li & Qiang Xu

  2. Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China

    Mingkuan Xie, Xin Xiao, Chunsheng Wu, Hao Nian, Fayan Li & Qiang Xu

  3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China

    Mingkuan Xie, Duojie Wu, Cheng Zhen, Wenjuan Wang, Meng Danny Gu & Qiang Xu

  4. SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Shenzhen, 518055, China

    Xin Xiao & Qiang Xu

  5. Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China

    Xin Xiao & Qiang Xu

  6. Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, 315200, China

    Duojie Wu & Meng Danny Gu

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  1. Mingkuan Xie
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MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nano-alloy as bifunctional oxygen electrocatalysts for zinc-air battery

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Xie, M., Xiao, X., Wu, D. et al. MOF-mediated synthesis of novel PtFeCoNiMn high-entropy nano-alloy as bifunctional oxygen electrocatalysts for zinc-air battery. Nano Res. 17, 5288–5297 (2024). https://doi.org/10.1007/s12274-024-6526-4

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