Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/152425
Title: Engineering grain boundaries at the 2D limit for the hydrogen evolution reaction
Authors: He, Yongmin
Tang, Pengyi
Hu, Zhili
He, Qiyuan
Zhu, Chao
Wang, Luqing
Zeng, Qingsheng
Golani, Prafful
Gao, Guanhui
Fu, Wei
Huang, Zhiqi
Gao, Caitian
Xia, Juan
Wang, Xingli
Wang, Xuewen
Zhu, Chao
Ramasse, Quentin M
Zhang, Ao
An, Boxing
Zhang, Yongzhe
Martí-Sánchez, Sara
Morante, Joan Ramon
Wang, Liang
Tay, Beng Kang
Yakobson, Boris I
Trampert, Achim
Zhang, Hua
Wu, Minghong
Wang, Qi Jie
Arbiol, Jordi
Liu, Zheng
Keywords: Engineering::Nanotechnology
Engineering::Materials
Issue Date: 2020
Source: He, Y., Tang, P., Hu, Z., He, Q., Zhu, C., Wang, L., Zeng, Q., Golani, P., Gao, G., Fu, W., Huang, Z., Gao, C., Xia, J., Wang, X., Wang, X., Zhu, C., Ramasse, Q. M., Zhang, A., An, B., ...Liu, Z. (2020). Engineering grain boundaries at the 2D limit for the hydrogen evolution reaction. Nature Communications, 11, 57-. https://dx.doi.org/10.1038/s41467-019-13631-2
Project: AcRF Tier 1 (M4011782.070 RG4/17 and M4011993.070 RG7/18) 
AcRF Tier 2 (2015- T2-2-007, 2016-T2-1-131, 2016-T2-2-153, and 2017-T2-2-136) 
AcRF Tier 3 (2018-T3- 1-002) 
NRF-CRP21- 2018-0092 
MOE2016-T2-2-159 
MOE2016-T2-1-128 
MOE Tier 1 RG164/15 
NRF-CRP18-2017-02 
NSFC (61704082) 
MOE2015-T2-2-043 
AcRF Tier 2 (MOE2015-T2-2-057; MOE2016-T2- 2-103; and MOE2017-T2-1-162) 
AcRF Tier 1 (2016-T1-002-051; 2017-T1-001-150; and 2017-T1-002-119) 
A1783c0009 
M4081296.070.500000 
Journal: Nature Communications 
Abstract: Atom-thin transition metal dichalcogenides (TMDs) have emerged as fascinating materials and key structures for electrocatalysis. So far, their edges, dopant heteroatoms and defects have been intensively explored as active sites for the hydrogen evolution reaction (HER) to split water. However, grain boundaries (GBs), a key type of defects in TMDs, have been overlooked due to their low density and large structural variations. Here, we demonstrate the synthesis of wafer-size atom-thin TMD films with an ultra-high-density of GBs, up to ~1012 cm-2. We propose a climb and drive 0D/2D interaction to explain the underlying growth mechanism. The electrocatalytic activity of the nanograin film is comprehensively examined by micro-electrochemical measurements, showing an excellent hydrogen-evolution performance (onset potential: -25 mV and Tafel slope: 54 mV dec-1), thus indicating an intrinsically high activation of the TMD GBs.
URI: https://hdl.handle.net/10356/152425
ISSN: 2041-1723
DOI: 10.1038/s41467-019-13631-2
Rights: © 2020 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles
NEWRI Journal Articles

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