Volume 1 Issue 3
September  2022
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Xue Han, Yanjie Liang, Lanling Zhao, Jun Wang, Qing Xia, Deyuan Li, Yao Liu, Zhaorui Zhou, Yuxin Long, Yebing Li, Yiming Zhang, Shulei Chou. A self-assembled nanoflower-like Ni5P4@NiSe2 heterostructure with hierarchical pores triggering high-efficiency electrocatalysis for Li-O2 batteries[J]. Materials Futures, 2022, 1(3): 035102. doi: 10.1088/2752-5724/ac8170
Citation: Xue Han, Yanjie Liang, Lanling Zhao, Jun Wang, Qing Xia, Deyuan Li, Yao Liu, Zhaorui Zhou, Yuxin Long, Yebing Li, Yiming Zhang, Shulei Chou. A self-assembled nanoflower-like Ni5P4@NiSe2 heterostructure with hierarchical pores triggering high-efficiency electrocatalysis for Li-O2 batteries[J]. Materials Futures, 2022, 1(3): 035102. doi: 10.1088/2752-5724/ac8170
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OPEN ACCESS

A self-assembled nanoflower-like Ni5P4@NiSe2 heterostructure with hierarchical pores triggering high-efficiency electrocatalysis for Li-O2 batteries

© 2022 The Author(s). Published by IOP Publishing Ltd on behalf of the Songshan Lake Materials Laboratory
Materials Futures, Volume 1, Number 3
  • Received Date: 2022-06-19
  • Accepted Date: 2022-07-15
  • Publish Date: 2022-08-08
doi: 10.1088/2752-5724/ac8170

  • 1 Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, People’s Republic of China

  • 2 School of Physics, Shandong University, Jinan 250061, People’s Republic of China

  • 3 Institute for Carbon Neutralization, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People’s Republic of China

Funds:

Funding support is gratefully acknowledged by the National Natural Science Foundation of China (51971119, 52171141, U21A20311), the Natural Science Foundation of Shandong Province (ZR2020YQ32, ZR2020QB122), the China Postdoctoral Science Foundation (2020M672054), the Guangdong Basic and Applied Basic Research Foundation (2021A1515111124), the Young Scholars Program of Shandong University (2019WLJH21) and Project of Introducing Urgently Needed Talents in Key Supporting Regions of Shandong Province (2203-371703-04-01-786537).

    Abstract

  • The remarkably high theoretical energy densities of Li–O2 batteries have triggered tremendous efforts for next-generation conversion devices. Discovering efficient oxygen reduction reaction and oxygen evolution reaction (ORR/OER) bifunctional catalysts and revealing their internal structure-property relationships are crucial in developing high-performance Li–O2 batteries. Herein, we have prepared a nanoflower-like NiP4@NiSe2 heterostructure and employed it as a cathode catalyst for Li–O2 batteries. As expected, the three-dimensional biphasic Ni5P4@NiSe2 nanoflowers facilitated the exposure of adequate active moieties and provide sufficient space to store more discharge products. Moreover, the strong electron redistribution between Ni5P4 and NiSe2 heterojunctions could result in the built-in electric fields, thus greatly facilitating the ORR/OER kinetics. Based on the above merits, the Ni5P4@NiSe2 heterostructure catalyst improved the catalytic performance of Li–O2 batteries and holds great promise in realizing their practical applications as well as inspiration for the design of other catalytic materials.

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