Atomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation

Handle URI:
http://hdl.handle.net/10754/605070
Title:
Atomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation
Authors:
Joya, Khurram; Sinatra, Lutfan ( 0000-0001-7034-7745 ) ; AbdulHalim, Lina G. ( 0000-0003-0818-234X ) ; Joshi, Chakra Prasad; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Bakr, Osman M. ( 0000-0002-3428-1002 ) ; Hussain, Irshad
Abstract:
Achieving 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.
KAUST Department:
Solar and Photovoltaic Engineering Research Center (SPERC); Physical Sciences and Engineering (PSE) Division
Citation:
Atomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation 2016 Nanoscale
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
Issue Date:
8-Apr-2016
DOI:
10.1039/C6NR00709K
Type:
Article
ISSN:
2040-3364; 2040-3372
Sponsors:
This 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.
Is Supplemented By:
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:10.5517/ccdc.csd.cc1jncj2; HANDLE:http://hdl.handle.net/10754/624514; 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:10.5517/ccdc.csd.cc1jnbs9; HANDLE:http://hdl.handle.net/10754/624513
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C6NR00709K
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorJoya, Khurramen
dc.contributor.authorSinatra, Lutfanen
dc.contributor.authorAbdulHalim, Lina G.en
dc.contributor.authorJoshi, Chakra Prasaden
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorBakr, Osman M.en
dc.contributor.authorHussain, Irshaden
dc.date.accessioned2016-04-12T09:42:56Zen
dc.date.available2016-04-12T09:42:56Zen
dc.date.issued2016-04-08en
dc.identifier.citationAtomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidation 2016 Nanoscaleen
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.doi10.1039/C6NR00709Ken
dc.identifier.urihttp://hdl.handle.net/10754/605070en
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.en
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.en
dc.language.isoenen
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C6NR00709Ken
dc.rightsArchived with thanks to Nanoscaleen
dc.titleAtomically Monodisperse Nickel Nanoclusters as Highly Active Electrocatalysts for Water Oxidationen
dc.typeArticleen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNanoscaleen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Chemistry, University of Engineering and Technology, GT Road 54890, Lahore, Pakistanen
dc.contributor.institutionDepartment of Chemistry, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS). DHA, Lahore, Pakistanen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorSinatra, Lutfanen
kaust.authorAbdulHalim, Lina G.en
kaust.authorJoshi, Chakra Prasaden
kaust.authorHedhili, Mohamed N.en
kaust.authorBakr, Osman M.en
dc.relation.isSupplementedByJoya, 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.cc1jncj2en
dc.relation.isSupplementedByDOI:10.5517/ccdc.csd.cc1jncj2en
dc.relation.isSupplementedByHANDLE:http://hdl.handle.net/10754/624514en
dc.relation.isSupplementedByJoya, 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.cc1jnbs9en
dc.relation.isSupplementedByDOI:10.5517/ccdc.csd.cc1jnbs9en
dc.relation.isSupplementedByHANDLE:http://hdl.handle.net/10754/624513en
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