Unraveling the surface self-reconstruction of Fe-doped Ni-thiophosphate for efficient oxygen evolution reaction

Surface self-reconstruction of oxygen evolution reaction (OER) electrocatalysts generally occurs during the electrochemical activation process. Herein, we study the surface self-reconstruction of a 2D layered Fe-doped Ni-thiophosphate (Ni x Fe 1− x PS 3 ) nanosheet. The role of Fe in the surface sel...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2023-07, Vol.59 (6), p.9247-925
Main Authors: Kirubasankar, Balakrishnan, Won, Yo Seob, Choi, Soo Ho, Kim, Jae Woo, Adofo, Laud Anim, Kim, Soo Min, Kim, Ki Kang
Format: Article
Language:English
Subjects:
Electrocatalysts
Electrochemical activation
Iron
Metal oxides
Nickel
Oxygen evolution reactions
Raman spectroscopy
Reconstruction
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Summary:Surface self-reconstruction of oxygen evolution reaction (OER) electrocatalysts generally occurs during the electrochemical activation process. Herein, we study the surface self-reconstruction of a 2D layered Fe-doped Ni-thiophosphate (Ni x Fe 1− x PS 3 ) nanosheet. The role of Fe in the surface self-reconstruction of NiPS 3 during the OER is investigated by using an in situ Raman analysis. Formation of amorphous metal/non-metal oxide layers on the surface of Ni x Fe 1− x PS 3 can efficiently act as the ultimate catalytic center for the OER. Iron (Fe) promotes the surface reconstruction of NiPS 3 even at lower potential for the Ni x Fe 1− x PS 3 OER electrocatalyst. The surface reconstructed amorphous layers can efficiently act as real catalytic active sites for the OER.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc01510f