Engineering grain boundaries at the 2D limit for the hydrogen evolution reaction
He, Yongmin (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Tang, PengYi (Institut Català de Nanociència i Nanotecnologia)
Hu, Zhili (Rice University. Department of Materials Science and NanoEngineering (USA))
He, Qiyuan (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Zhu, Chao (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Wang, Luqing (Rice University. Department of Materials Science and NanoEngineering (USA))
Zeng, Qingsheng (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Golani, Prafful (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Gao, Guanhui (Paul-Drude-Institut für Festkörperelektronik Leibniz-Institut im Forschungsverbund (Germany))
Fu, Wei (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Huang, Zhiqi (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Gao, Caitian (Nanyang Technological University. Centre for Micro-/Nano-electronics (Singapore))
Xia, Juan (University of Electronic Science and Technology of China. Institute of Fundamental and Frontier Sciences (China))
Wang, Xingli (Nanyang Technological University. CNRS-International-NTU-THALES Research Alliance (Singapore))
Wang, Xuewen (Northwestern Polytechnical University. Institute of Flexible Electronics (China))
Zhu, Chao (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
Ramasse, Quentin (University of Leeds. School of Chemical and Process Engineering (UK))
Zhang, Ao (Nanyang Technological University. School of Materials Science and Engineering (Singapore))
An, Boxing (Beijing University of Technology. College of Materials Science and Engineering (China))
Zhang, Yongzhe (Beijing University of Technology. College of Materials Science and Engineering (China)
Martí-Sánchez, Sara (Institut Català de Nanociència i Nanotecnologia)
Morante, Joan Ramon (Institut de Recerca en Energia de Catalunya)
Wang, Liang (Shanghai University. School of Environmental and Chemical Engineering (China))
Tay, Beng Kang (Nanyang Technological University. CNRS-International-NTU-THALES Research Alliance (Singapore))
Yakobson, Boris I. (Rice University. Department of Materials Science and NanoEngineering (USA))
Trampert, Achim (Paul-Drude-Institut für Festkörperelektronik Leibniz-Institut im Forschungsverbund Berlin Hausvogteiplatz (Germany))
Zhang, Hua (City University of Hong Kong. Department of Chemistry (China))
Wu, Minghong (Shanghai University. School of Environmental and Chemical Engineering (China))
Wang, Qi Jie (Nanyang Technological University. Center for OptoElectronics and Biophotonics (Singapore))
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Liu, Zheng (Environmental Chemistry and Materials Centre. Nanyang Environment and Water Research Institute (Singapore))

Data:	2020
Resum:	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 ~10 12 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.
Ajuts:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1246 Ministerio de Economía y Competitividad ENE2017-85087-C2C3 Ministerio de Economía y Competitividad SEV-2017-0706
Nota:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Catalyst synthesis ; Electrocatalysis ; Two-dimensional materials
Publicat a:	Nature communications, Vol. 11 (January 2020) , art. 57, ISSN 2041-1723

DOI: 10.1038/s41467-019-13631-2
PMID: 31896753

12 p, 8.1 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats