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Nat Commun. 2019 Mar 22;10(1):1348. doi: 10.1038/s41467-019-09269-9.

Boundary activated hydrogen evolution reaction on monolayer MoS2.

Zhu J1,2, Wang ZC3, Dai H4, Wang Q1,5, Yang R6,7, Yu H1, Liao M1,5, Zhang J1, Chen W1, Wei Z1,5, Li N1,5, Du L1, Shi D1,5, Wang W1,5, Zhang L8, Jiang Y9,10,11, Zhang G12,13,14,15.

Author information

1
CAS Key Laboratory of Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
2
School of Physics and Electronic Engineering, Sichuan Normal University, Chengdu, Sichuan, 610101, China.
3
International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China.
4
School of Physics, Nankai University, Tianjin, 300071, China.
5
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China.
6
CAS Key Laboratory of Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. ryang@iphy.ac.cn.
7
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China. ryang@iphy.ac.cn.
8
School of Physics, Nankai University, Tianjin, 300071, China. lxzhang@nankai.edu.cn.
9
International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, China. yjiang@pku.edu.cn.
10
Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China. yjiang@pku.edu.cn.
11
CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, PR China. yjiang@pku.edu.cn.
12
CAS Key Laboratory of Nanoscale Physics and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China. gyzhang@iphy.ac.cn.
13
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China. gyzhang@iphy.ac.cn.
14
Collaborative Innovation Center of Quantum Matter, Beijing, 100190, China. gyzhang@iphy.ac.cn.
15
Beijing Key Laboratory for Nanomaterials and Nanodevices, Beijing, 100190, China. gyzhang@iphy.ac.cn.

Abstract

Recently, monolayer molybdenum disulphide (MoS2) has emerged as a promising and non-precious electrocatalyst for hydrogen evolution reaction. However, its performance is largely limited by the low density and poor reactivity of active sites within its basal plane. Here, we report that domain boundaries in the basal plane of monolayer MoS2 can greatly enhance its hydrogen evolution reaction performance by serving as active sites. Two types of effective domain boundaries, the 2H-2H domain boundaries and the 2H-1T phase boundaries, were investigated. Superior hydrogen evolution reaction catalytic activity, long-term stability and universality in both acidic and alkaline conditions were achieved based on a multi-hierarchy design of these two types of domain boundaries. We further demonstrate that such superior catalysts are feasible at a large scale by applying this multi-hierarchy design of domain boundaries to wafer-scale monolayer MoS2 films.

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