Applied Catalysis2022，Vol.30413.DOI:10.1016/j.apcatb.2021.120993

Large-scale synthetic Mo@(2H-1T)-MoSe2 monolithic electrode for efficient hydrogen evolution in all pH scale ranges and seawater

Yang, Chunming Zhou, Lihai Wang, Chuantao Duan, Wen Zhang, Le Zhang, Fuchun Zhang, Junjun Zhen, Yanzhong Gao, Loujun Fu, Feng Liang, Yucang
Applied Catalysis2022，Vol.30413.DOI:10.1016/j.apcatb.2021.120993
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  • NSTL
  • Elsevier

Large-scale synthetic Mo@(2H-1T)-MoSe2 monolithic electrode for efficient hydrogen evolution in all pH scale ranges and seawater

Yang, Chunming 1Zhou, Lihai 1Wang, Chuantao 1Duan, Wen 1Zhang, Le 1Zhang, Fuchun 1Zhang, Junjun 2Zhen, Yanzhong 1Gao, Loujun 1Fu, Feng 1Liang, Yucang3
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作者信息

  • 1. Yanan Univ
  • 2. Xian Technol Univ
  • 3. Eberhard Karls Univ Tubingen
  • 折叠

Abstract

Although molybdenum selenide with controllable phase and morphology is pivotal for high-efficiency hydrogen evolution reaction (HER), at present, the MoSe2-based HER electrodes widely applied to all pH scale ranges and seawater are remaining tremendous challenge, due to the absence of active sites, poor conductivity of MoSe2 and the limitation of synthetic method. In this work, the large-scale Mo@(2H-1T)-MoSe2 monolithic electrode was successfully fabricated by etching Mo mesh in Na2SeO3 solution via a hydrothermal technique. Continuous phase and morphology modulation of MoSe(2 )on Mo mesh and the optimal synthetic condition are described to fabricate a state-of-the-art electrode Mo@(2H-1T)-MoSe2 with the piezo-flexoelectric coupling effect and heterostructure. The HER tests of Mo@(2H-1T)-MoSe2 in all pH ranges and seawater exhibit an enhanced HER activity, high stability and cycle durability, which benefit from the synergistic interaction of the piezo-flexoelectric coupling effect of hybrid 2H-1T phase of MoSe2 nanosheets and heterojunction. Operando EIS and theoretical calculations also revealed this viewpoint. This strategy can also be extended arbitrarily to the large-scale preparation of other heterostructured monolithic electrodes for high-efficiency HER, such as M@MSex (M = Ni, Cu, W, etc.). This study provides a simple, effective and low-cost approach to develop the state-of-the-art metal-based hetero-structured electrodes for other energy-related applications.

Key words

Molybdenum diselenide/Heterojunction interface/Phase and morphology engineering/Hydrogen evolution reaction/Full pH/MODULATION/NANOSHEETS/MOS2

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量39
参考文献量50
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