1. N/P-doped NiFeV oxide nanosheets with oxygen vacancies as an efficient electrocatalyst for the oxygen evolution reaction.
- Author
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Zhang, Jingyuan, Ma, Zhen, Wang, Lanqi, Ni, Hui, Yu, Jianing, and Zhao, Bin
- Subjects
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OXYGEN evolution reactions , *ELECTROCATALYSTS , *LONG-Term Evolution (Telecommunications) , *NANOSTRUCTURED materials , *CATALYTIC activity , *METALLIC oxides , *GRAPHENE oxide , *IRON-nickel alloys - Abstract
Plasma treatment as an effective strategy can simultaneously achieve surface modification and heteroatom doping. Here, an N/P-doped NiFeV oxide nanosheet catalyst (N/P-NiFeVO) constructed by Ar/PH3 plasma treatment is used to drive the oxygen evolution reaction (OER). The introduction of V species leads to the formation of an ultrathin ordered nanostructure and exposure of more active sites. Compared to the 2D NiFeV LDH, the prepared N/P-NiFeVO by plasma treatment possesses multiple-valence Fe, V and Ni species, which regulate the intrinsic electronic structure and enable a superior catalytic activity for the OER in alkaline media. Specifically, the N/P-NiFeVO only require an overpotential of 273 mV to drive the current density of 100 mA cm−2. What's more, the electrode can maintain a stable current density in a long-term oxygen evolution reaction (∼120 h) under alkaline conditions. This work provides new insight for the rational design of mixed metal oxides for OER electrocatalysts. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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