Cited by 28Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsFuel Cells and Related Materials

Electron and surface engineering of Ni2P/MnP4 heterojunction as high performance bifunctional electrocatalyst for amperage-level overall water splitting

Yan, RuiPeng, Zou, Xifei, Liang, Yuehua, Liu, Yuchuan, Hu, Feilong, Mi, Yan·2024·Journal of Colloid and Interface Science

Abstract

Producing hydrogen through electrocatalytic overall water splitting with ampere-level current density is still limited by the high cost and poor stability of electrocatalysts. In this work, a new type Ni 2 P/MnP 4 heterojunction composite material was designed and prepared as bifunctional electrocatalyst. Based on XPS spectra and theoretical calculation, the formation of Ni 2 P/MnP 4 heterojunction successfully modulates the local electronic structure of Ni 2 P and enhances the ionization of H and Ni by increasing the electron transfer rate. Moreover, the special nanovilli structure and superhydropholic/superaerophobic surface of Ni 2 P/MnP 4 heterojunction accelerates the transfer of electrolyte and gaseous products. Benefiting from these advantages, the as-prepared Ni 2 P/MnP 4/CF not only exhibits superior electrocatalytic performance, which can release 10 mA/cm 2 current density with a low overpotential of 69 mV and 247 mV for HER and OER respectively, but also shows admirable stability of continuous overall water splitting to drive 1000 mA/cm 2 for 180 h without notable activity degradation. We believe this material possesses outstanding potential for industrial applications, and our strategy may provide a new pathway to design relative materials.

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Crossref · 10.1016/j.jcis.2024.05.002

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  • A micro-sheet with nanowires structure on carbon fiber constructed by hydrothermal and phosphorization shows strong superhydrophilicity/superaerophobicity and stability, and its overpotential at high current density is much lower than Pt/C catalyst.

    “Yan [163] combined hydrothermal and phosphorization strategies to construct a micro-sheet with nanowires structure on carbon fiber (Fig. 15a). This micro/nano combined 3D structure catalyst shows strong superhydrophilicity/superaerophobicity and stability, and its overpotential at high current density is much lower than that of Pt/C catalyst.”

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Authors
Yan, R., Zou, X., Liang, Y., Liu, Y., Hu, F., & Mi, Y.
Affiliations
Guangxi Minzu University (CN)
Corresponding author
Mi, Yan
Venue
Journal of Colloid and Interface Science
Publisher
Elsevier BV
Published
2024-09
Volume
669
Pages
349-357
ISSN
0021-9797 (ISSN-L)
OpenAlex
W4396591139
Cited by
27
References
48
Citations by year
2026: 10 · 2025: 14 · 2024: 3
FWCI
1.81
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Colloid and Interface Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
Keywords
bifunctional electrocatalysts, overall water splitting, hydrogen evolution reaction, oxygen evolution reaction, nickel phosphide, molybdenum phosphide, electron transfer, catalyst stability, current density

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