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

Balakrishnan Kirubasankar; Yo Seob Won; Soo Ho Choi; Jae Woo Kim; Laud Anim Adofo; Soo Min Kim; Ki Kang Kim

doi:10.1039/d3cc01510f

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

Chem Commun (Camb). 2023 Jul 25;59(60):9247-9250. doi: 10.1039/d3cc01510f.

Authors

Balakrishnan Kirubasankar^{1

2}, Yo Seob Won¹, Soo Ho Choi^{1

3}, Jae Woo Kim¹, Laud Anim Adofo², Soo Min Kim², Ki Kang Kim^{1

3}

Affiliations

¹ Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea. kikangkim@skku.edu.
² Department of Chemistry, Sookmyung Women's University, Seoul 140742, Republic of Korea. soominkim@sookmyung.ac.kr.
³ Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University, Suwon 16419, Republic of Korea.

PMID: 37424442
DOI: 10.1039/d3cc01510f

Abstract

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_xFe_1-xPS₃) nanosheet. The role of Fe in the surface self-reconstruction of NiPS₃ 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_xFe_1-xPS₃ can efficiently act as the ultimate catalytic center for the OER.