Electrocatalytic hydrogen production performance of MXene/cobalt phosphide composites

Li Jinzhou; Chen Chao; Dang Jie

doi:10.7513/j.issn.1004-7638.2023.02.007

Volume 44 Issue 2

Apr. 2023

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Li Jinzhou, Chen Chao, Dang Jie. Electrocatalytic hydrogen production performance of MXene/cobalt phosphide composites[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 48-54. doi: 10.7513/j.issn.1004-7638.2023.02.007

Citation:

Li Jinzhou, Chen Chao, Dang Jie. Electrocatalytic hydrogen production performance of MXene/cobalt phosphide composites[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 48-54. doi: 10.7513/j.issn.1004-7638.2023.02.007

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Electrocatalytic hydrogen production performance of MXene/cobalt phosphide composites

doi: 10.7513/j.issn.1004-7638.2023.02.007

Li Jinzhou^1
,,
Chen Chao¹,
Dang Jie^{2
,
,}

1.
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2.
College of Materials Science and Engineering, Chongqing University, Chongqing 400040, China

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Received Date: 2022-12-31
Publish Date: 2023-04-30

Abstract

Abstract

To address the issues of low electrical conductivity and easy clogging of active sites in conventional electrocatalyst materials, a highly conductive and hydrophilic two-dimensional (2D) titanium vanadium carbide (MXene) is used as the catalyst loading substrate via combining metal organic framework derived cobalt phosphides with high specific surface areas to prepare cathode materials for electrolytic water splitting. The crystal structure, surface morphological characteristics, electronic structure of active sites, and electrochemical properties of the electrode materials are investigated by utilizing the X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), density functional theory calculations (DFT), and electrochemical measurements. The results demonstrate that the carbon and nitrogen components of the organic ligands can effectively tune the electronic structure of the active sites and enhance the adsorption-desorption kinetics; the 2D MXene can further reduce the charge transfer resistance of the electrode materials, the as-obtained catalyst only requires 114 mV overpotential to achieve 10 mA/cm² current density and exhibits outstanding stability. The research provides a reference for the preparation of high performance non-precious metal catalysts for hydrogen evolution reaction.
- MXene,
- electrochemical water splitting,
- metal organic framework,
- cobalt phosphides,
- electrochemical performance

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References(16)

References

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