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Nano Research 2024, 17(4): 2429-2437 https://doi.org/10.1007/s12274-023-6088-x
Research Article | Issue | Published: 07 September 2023

Surface reconstruction and structural transformation of two-dimensional Ni-Fe MOFs for oxygen evolution in seawater media

Show Author's Information Liyuan Xiao1,§,  Xue Bai1,§,  Jingyi Han1,  Tianmi Tang1,  Siyu Chen1,  Hui Qi2,  Changmin Hou3,  Fuquan Bai4( ),  Zhenlu Wang1( ),  Jingqi Guan1( )
Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun 130021, China
The Second Hospital of Jilin University, Changchun 130021, China
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, College of Chemistry, Changchun 130023, China

§ Liyuan Xiao and Xue Bai contributed equally to this work.

Keywords:
surface reconstruction, density functional theory (DFT) calculation, oxygen evolution reaction, seawater electrolysis, Ni3FeOOH
Topics:
Catalysis
Cite this article:
Xiao L, Bai X, Han J, et al. Surface reconstruction and structural transformation of two-dimensional Ni-Fe MOFs for oxygen evolution in seawater media. Nano Research, 2024, 17(4): 2429-2437. https://doi.org/10.1007/s12274-023-6088-x
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Abstract Full text Electronic supplementary material About this article

As a four-electron transfer reaction, oxygen evolution reaction (OER) is limited by large overpotential and slow kinetics. Here, we in-situ synthesized two-dimensional (2D) Ni-Fe metal-organic framework nanosheets on nickel foam (NixFe-TPA/NF, TPA = terephthalic acid) for oxygen evolution in alkaline and alkaline seawater electrolytes. In 1 M KOH, Ni3Fe-TPA/NF shows a low overpotential (η10) of 189 mV at 10 mA·cm−2 and an ultra-low overpotential of only 260 mV at 500 mA·cm−2. In alkaline seawater, Ni3Fe-TPA/NF still provides impressive OER performance, with an η10 of 265 mV. In-situ Raman characterization results show that the phase transition occurs during the OER, and Ni3FeOOH with more oxygen vacancies is in-situ formed, reducing the OER energy barrier. Density functional theory (DFT) reveals that the synergy between Ni and Fe reduces the energy barrier and accelerates the rate-determining step. In addition, the ultra-thin 2D sheet structure and the close combination of Ni3FeOOH and highly conductive NF support ensure the high catalytic OER activity. Therefore, the surface reconstruction and structural modification strategy can be used to design and prepare high-performance OER electrocatalysts for energy-related applications.


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About this article

Surface reconstruction and structural transformation of two-dimensional Ni-Fe MOFs for oxygen evolution in seawater media

Show Author's information Liyuan Xiao1,§, Xue Bai1,§, Jingyi Han1, Tianmi Tang1, Siyu Chen1, Hui Qi2, Changmin Hou3, Fuquan Bai4( ), Zhenlu Wang1( ), Jingqi Guan1( )
Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun 130021, China
The Second Hospital of Jilin University, Changchun 130021, China
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, College of Chemistry, Changchun 130023, China

§ Liyuan Xiao and Xue Bai contributed equally to this work.

Abstract

As a four-electron transfer reaction, oxygen evolution reaction (OER) is limited by large overpotential and slow kinetics. Here, we in-situ synthesized two-dimensional (2D) Ni-Fe metal-organic framework nanosheets on nickel foam (NixFe-TPA/NF, TPA = terephthalic acid) for oxygen evolution in alkaline and alkaline seawater electrolytes. In 1 M KOH, Ni3Fe-TPA/NF shows a low overpotential (η10) of 189 mV at 10 mA·cm−2 and an ultra-low overpotential of only 260 mV at 500 mA·cm−2. In alkaline seawater, Ni3Fe-TPA/NF still provides impressive OER performance, with an η10 of 265 mV. In-situ Raman characterization results show that the phase transition occurs during the OER, and Ni3FeOOH with more oxygen vacancies is in-situ formed, reducing the OER energy barrier. Density functional theory (DFT) reveals that the synergy between Ni and Fe reduces the energy barrier and accelerates the rate-determining step. In addition, the ultra-thin 2D sheet structure and the close combination of Ni3FeOOH and highly conductive NF support ensure the high catalytic OER activity. Therefore, the surface reconstruction and structural modification strategy can be used to design and prepare high-performance OER electrocatalysts for energy-related applications.

Keywords: surface reconstruction, density functional theory (DFT) calculation, oxygen evolution reaction, seawater electrolysis, Ni3FeOOH

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Publication history
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Acknowledgements

Publication history

Received: 03 July 2023
Revised: 29 July 2023
Accepted: 13 August 2023
Published: 07 September 2023
Issue date: April 2024

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© Tsinghua University Press 2023

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 22075099), the Natural Science Foundation of Jilin Province (Nos. 20220101051JC and 20200201395JC), and the Education Department of Jilin Province (Nos. JJKH20220967KJ and JJKH20220968CY).

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