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Nickel-vanadium monolayer double hydroxide for efficient electrochemical water oxidation
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Organic Chemistry.
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2016 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 7, 11981Article in journal (Refereed) PublishedText
Abstract [en]

Highly active and low-cost electrocatalysts for water oxidation are required due to the demands on sustainable solar fuels; however, developing highly efficient catalysts to meet industrial requirements remains a challenge. Herein, we report a monolayer of nickel-vanadium-layered double hydroxide that shows a current density of 27 mA cm(-2) (57 mA cm(-2) after ohmic-drop correction) at an overpotential of 350 mV for water oxidation. Such performance is comparable to those of the best-performing nickel-iron-layered double hydroxides for water oxidation in alkaline media. Mechanistic studies indicate that the nickel-vanadium-layered double hydroxides can provide high intrinsic catalytic activity, mainly due to enhanced conductivity, facile electron transfer and abundant active sites. This work may expand the scope of cost-effective electrocatalysts for water splitting.

Place, publisher, year, edition, pages
Nature Publishing Group, 2016. Vol. 7, 11981
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Organic Chemistry
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URN: urn:nbn:se:kth:diva-189946DOI: 10.1038/ncomms11981ISI: 000378815100001PubMedID: 27306541ScopusID: 2-s2.0-84975321850OAI: oai:DiVA.org:kth-189946DiVA: diva2:950120
Note

QC 20160727

Available from: 2016-07-27 Created: 2016-07-25 Last updated: 2016-07-27Bibliographically approved

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