Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/48471

TitleAtomic-layer-deposited ultrafine MoS2 nanocrystals on cobalt foam for efficient and stable electrochemical oxygen evolution
Author(s)Xiong, Dehua
Zhang, Qingqing
Li, Wei
Li, Junjie
Fu, Xiuli
Cerqueira, M. F.
Alpuim, P.
Liu, Lifeng
KeywordsNanocrystals
MoS2
Oxygen evolution
Atomic-layer-deposition
Issue dateJan-2017
PublisherRoyal Soc Chemistry
JournalNanoscale
CitationNanoscale 9 pp. 2711-2717 (2017)
Abstract(s)Ultrafine molybdenum sulfide (MoS2) nanocrystals are grown on a porous cobalt (Co) foam current collector by atomic layer deposition (ALD) using molybdenum hexacarbonyl and hydrogen sulfide as precursors. When used to catalyze the oxygen evolution reaction (OER), the optimal Co@MoS2 electrode, even with a MoS2 loading as small as 0.06 mg cm-2, exhibits a large cathodic shift of ca. 200 mV in the onset potential (the potential at which the current density is 5 mA cm-2), a low overpotential of only 270 mV to attain an anodic current density of 10 mA cm-2, much smaller charge transfer resistance and substantially improved long-term stability at both low and high current densities, with respect to the bare Co foam electrode, showing substantial promise for use as an efficient, low-cost and durable anode in water electrolyzers.
Typearticle
URIhttp://hdl.handle.net/1822/48471
DOI10.1039/C7NR00140A
ISSN2046-2069
Publisher versionhttp://pubs.rsc.org/en/content/articlelanding/2017/nr/c7nr00140a#!divAbstract
Peer-Reviewedyes
AccessopenAccess
Appears in Collections:CDF - CEP - Artigos/Papers (with refereeing)

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