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dc.contributor.authorJoya, khurram
dc.contributor.authorSinatra, Lutfan
dc.contributor.authorAbdulHalim, Lina G.
dc.contributor.authorJoshi, Chakra Prasad
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorBakr, Osman
dc.contributor.authorHussain, Irshad
dc.date.accessioned2016-04-12T09:42:56Z
dc.date.available2016-04-12T09:42:56Z
dc.date.issued2016
dc.identifier.citationAtomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation 2016 Nanoscale
dc.identifier.issn2040-3364
dc.identifier.issn2040-3372
dc.identifier.doi10.1039/C6NR00709K
dc.identifier.urihttp://hdl.handle.net/10754/605070
dc.description.abstractAchieving water splitting at low overpotential with high oxygen evolution efficiency and stability is important for realizing solar to chemical energy conversion devices. Herein we report the synthesis, characterization and electrochemical evaluation of highly active nickel nanoclusters (Ni NCs) for water oxidation at low overpotential. These atomically precise and monodisperse Ni NCs are characterized by using UV-visible absorption spectroscopy, single crystal X-ray diffraction and mass spectrometry. The molecular formulae of these Ni NCs are found to be Ni4(PET)8 and Ni6(PET)12 and are highly active electrocatalysts for oxygen evolution without any pre-conditioning. Ni4(PET)8 are slightly better catalysts than Ni6(PET)12 and initiate the oxygen evolution at an amazingly low overpotential of ~1.51 V (vs RHE; η ≈ 280 mV). The peak oxygen evolution current density (J) of ~150 mA cm–2 at 2.0 V (vs. RHE) with a Tafel slope of 38 mV dec–1 is observed using Ni4(PET)8. These results are comparable to the state-of-the art RuO2 electrocatalyst, which is highly expensive and rare compared to Ni-based materials. Sustained oxygen generation for several hours with an applied current density of 20 mA cm–2 demonstrates the long-term stability and activity of these Ni NCs towards electrocatalytic water oxidation. This unique approach provides a facile method to prepare cost-effective, nanoscale and highly efficient electrocatalysts for water oxidation.
dc.description.sponsorshipThis work was supported by KAUST. K.S.J. acknowledges the research support from Higher Education Commission (HEC), Government of Pakistan. I.H. also acknowledges KAUST and LUMS for financial support. All authors thank Prof. Mohamed Eddaoudi and his team for support with single crystal XRD measurements.
dc.language.isoen
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C6NR00709K
dc.rightsArchived with thanks to Nanoscale
dc.titleAtomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSurface Science
dc.identifier.journalNanoscale
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemistry, University of Engineering and Technology, GT Road 54890, Lahore, Pakistan
dc.contributor.institutionDepartment of Chemistry, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore, Pakistan
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personSinatra, Lutfan
kaust.personAbdulHalim, Lina G.
kaust.personJoshi, Chakra Prasad
kaust.personHedhili, Mohamed N.
kaust.personBakr, Osman M.
dc.relation.issupplementedbyDOI:10.5517/ccdc.csd.cc1jncj2
dc.relation.issupplementedbyDOI:10.5517/ccdc.csd.cc1jnbs9
refterms.dateFOA2017-04-08T00:00:00Z
display.relations<b> Is Supplemented By:</b> <br/> <ul><li><i>[Dataset]</i> <br/> Joya, K. S., Sinatra, L., AbdulHalim, L. G., Joshi, C. P., Hedhili, M. N., Bakr, O. M., & Hussain, I. (2016). CCDC 1419754: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/ccdc.csd.cc1jncj2. DOI: <a href="https://doi.org/10.5517/ccdc.csd.cc1jncj2">10.5517/ccdc.csd.cc1jncj2</a> HANDLE: <a href="http://hdl.handle.net/10754/624514">10754/624514</a></li><li><i>[Dataset]</i> <br/> Joya, K. S., Sinatra, L., AbdulHalim, L. G., Joshi, C. P., Hedhili, M. N., Bakr, O. M., & Hussain, I. (2016). CCDC 1419731: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/ccdc.csd.cc1jnbs9. DOI: <a href="https://doi.org/10.5517/ccdc.csd.cc1jnbs9">10.5517/ccdc.csd.cc1jnbs9</a> HANDLE: <a href="http://hdl.handle.net/10754/624513">10754/624513</a></li></ul>


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