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Nickel-vanadium monolayer double hydroxide for efficient electrochemical water oxidation
KTH Royal Inst Technol, Dept Chem, Organ Chem, S-10044 Stockholm, Sweden.;Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China..
KTH Royal Inst Technol, Dept Chem, Organ Chem, S-10044 Stockholm, Sweden..
KTH Royal Inst Technol, Sch Biotechnol, Div Theoret Chem & Biol, SE-10691 Stockholm, Sweden..
KTH Royal Inst Technol, Dept Chem Surface & Corros Sci, SE-10044 Stockholm, Sweden..
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2016 (English)In: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 7, 11981Article in journal (Refereed) Published
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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.

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2016. Vol. 7, 11981
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URN: urn:nbn:se:uu:diva-299913DOI: 10.1038/ncomms11981ISI: 000378815100001PubMedID: 27306541OAI: oai:DiVA.org:uu-299913DiVA: diva2:950349
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Swedish Energy AgencyKnut and Alice Wallenberg FoundationSwedish Research Council
Available from: 2016-07-29 Created: 2016-07-29 Last updated: 2017-11-28Bibliographically approved

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Philippe, BertrandRensmo, Håkan

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