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dc.contributor.authorTan, Chaoliangen_US
dc.contributor.authorLuo, Zhiminen_US
dc.contributor.authorChaturvedi, Apoorvaen_US
dc.contributor.authorCai, Yongqingen_US
dc.contributor.authorDu, Yonghuaen_US
dc.contributor.authorGong, Yueen_US
dc.contributor.authorHuang, Yingen_US
dc.contributor.authorLai, Zhuangchaien_US
dc.contributor.authorZhang, Xiaoen_US
dc.contributor.authorZheng, Lirongen_US
dc.contributor.authorQi, Xiaoyingen_US
dc.contributor.authorGoh, Min Haoen_US
dc.contributor.authorWang, Jieen_US
dc.contributor.authorHan, Shikuien_US
dc.contributor.authorWu, Xue-Junen_US
dc.contributor.authorGu, Linen_US
dc.contributor.authorKloc, Christianen_US
dc.contributor.authorZhang, Huaen_US
dc.identifier.citationTan, C., Luo, Z., Chaturvedi, A., Cai, Y., Du, Y., Gong, Y., . . . Zhang, H. (2018). Preparation of high-percentage 1T-phase transition metal dichalcogenide nanodots for electrochemical hydrogen evolution. Advanced materials, 30(9), 1705509-. doi:10.1002/adma.201705509en_US
dc.description.abstractNanostructured transition metal dichalcogenides (TMDs) are proven to be efficient and robust earth-abundant electrocatalysts to potentially replace precious platinum-based catalysts for the hydrogen evolution reaction (HER). However, the catalytic efficiency of reported TMD catalysts is still limited by their low-density active sites, low conductivity, and/or uncleaned surface. Herein, a general and facile method is reported for high-yield, large-scale production of water-dispersed, ultrasmall-sized, high-percentage 1T-phase, single-layer TMD nanodots with high-density active edge sites and clean surface, including MoS2 , WS2 , MoSe2 , Mo0.5 W0.5 S2 , and MoSSe, which exhibit much enhanced electrochemical HER performances as compared to their corresponding nanosheets. Impressively, the obtained MoSSe nanodots achieve a low overpotential of -140 mV at current density of 10 mA cm-2 , a Tafel slope of 40 mV dec-1 , and excellent long-term durability. The experimental and theoretical results suggest that the excellent catalytic activity of MoSSe nanodots is attributed to the high-density active edge sites, high-percentage metallic 1T phase, alloying effect and basal-plane Se-vacancy. This work provides a universal and effective way toward the synthesis of TMD nanostructures with abundant active sites for electrocatalysis, which can also be used for other applications such as batteries, sensors, and bioimaging.en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.relation.ispartofAdvanced materialsen_US
dc.rights© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en_US
dc.titlePreparation of high-percentage 1T-phase transition metal dichalcogenide nanodots for electrochemical hydrogen evolutionen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen_US
dc.contributor.organizationCenter for Programmable Materialsen_US
dc.subject.keywordsHydrogen Evolutionen_US
dc.subject.keywordsMetallic 1T Phaseen_US
item.fulltextNo Fulltext-
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