Phase Engineering of W-Doped MoS2 by Magneto-Hydrothermal Synthesis for Hydrogen Evolution Reaction

Changdian Li; Lili Zhu; Ziqiang Wu; Qian Chen; Ruobing Zheng; Jie Huan; Yanan Huang; Xuebin Zhu; Yuping Sun

doi:10.1002/smll.202303646

Phase Engineering of W-Doped MoS₂ by Magneto-Hydrothermal Synthesis for Hydrogen Evolution Reaction

Small. 2023 Nov;19(48):e2303646. doi: 10.1002/smll.202303646. Epub 2023 Aug 1.

Authors

Changdian Li^{1

2}, Lili Zhu^{1

2}, Ziqiang Wu^{1

2}, Qian Chen^{1

2}, Ruobing Zheng^{1

2}, Jie Huan^{1

2}, Yanan Huang¹, Xuebin Zhu¹, Yuping Sun^{1

3

4}

Affiliations

¹ Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.
² University of Science and Technology of China, Hefei, 230026, P. R. China.
³ High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei, 230031, P. R. China.
⁴ Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China.

PMID: 37528507
DOI: 10.1002/smll.202303646

Abstract

Molybdenum disulfide (MoS₂ ) has been proved as an excellent potential hydrogen evolution reaction (HER) catalyst. Compared with thermodynamically stable 2H-MoS₂ , 1T-MoS₂ exhibits higher conductivity and catalytic activity, whereas it is usually difficult to prepare since of thermodynamically metastable. Herein, a feasible method is reported to fabricate ambient-stable MoS₂ with high concentration 1T phase through magnetic free energy synergistic microstrain induced by W doping under low magnetic field. The 1T phase proportion in MoS₂ can be as high as 80% and is ambient-stable for more than one year. The catalyst prepared under a magnetic field of 3 T delivers an overpotential of 195 mV at a current density of 10 mA cm^-2 and has a long-term stability over 50 h. This work provides a novel strategy for preparation of MoS₂ with high 1T concentration and high stability.

Keywords: MoS2; hydrogen evolution reaction; magneto-hydrothermal; microstrain; phase engineering.

Abstract

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