Hybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applications

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dc.contributor.authorShendkar, Janardhan H.
dc.contributor.authorJadhav, Vijaykumar V.
dc.contributor.authorShinde, Pritamkumar V.
dc.contributor.authorMane, Rajaram S.
dc.contributor.authorO'Dwyer, Colm
dc.contributor.funderIrish Research Councilen
dc.date.accessioned2018-10-04T10:37:15Z
dc.date.available2018-10-04T10:37:15Z
dc.date.issued2018-09
dc.date.updated2018-10-04T10:27:48Z
dc.description.abstractPristine and nanocomposite (NC) hybrid electrodes of polyaniline (PANI)-nickel hydroxide [Ni(OH)2] have been prepared by single and two-step electrodeposition processes, respectively, onto stainless-steel (SS) substrates. Enhanced reversibility and stability of amorphous PANI- Ni(OH)2 NC electrodes compared to single electrode materials have been explored. PANI has a nanofibrous morphology, Ni(OH)2 has nanoplatelet-type morphology, and the NC electrodes retain an overall nanofibrous morphology. The maximum specific capacitance (SC), obtained from integrated charge under voltammetric conditions, for PANI (electro-deposited for 5 min), NC (electrodeposition of Ni(OH)2 for 10 min and 20 min onto PANI electrode surface) and Ni(OH)2 (electrodeposited for 10 min) electrodes, are 0.59, 39.06, 32.36, and 113.8 F/g, respectively, suggesting higher electrochemical performance of Ni(OH)2 electrode compared to PANI and NC electrodes. The retention in SC values with faster scan rates from 10 to 100 mV/s for PANI, NC (10 min), NC (20 min) and Ni(OH)2 are 38.7, 61.1, 52.4, and 29.0 %, respectively, explicitly confirming a higher reversibility in NC electrodes. The retention in SC values with increase of cycle number up to 1000 for PANI, NC (10 min), NC (20 min) and Ni(OH)2 electrodes are 34.9, 61.5, 67.5, and 40.7 % respectively, demonstrating higher electrochemical stability of NC electrodes over pure-phase electrodes. Nearly 2.15, 79.36, 66.66 and 406.83 mC/cm2 charges on PANI, NC (10 min), NC (20 min) and Ni(OH)2 electrodes, respectively, are obtained. Inner to total charge and outer to total charge ratios have been used to explain contributing sites to total charge in pristine and NC electrodes.en
dc.description.sponsorshipIrish Research Council (Government of Ireland Postdoctoral fellowship award under contract GOIPD/2016/575)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationShendkar, J. H., Jadhav, V. V., Shinde, P. V., Mane, R. S. and O'Dwyer, C. (2018) 'Hybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applications', Heliyon, 4(9), e00801 (17 pp). doi: 10.1016/j.heliyon.2018.e00801en
dc.identifier.doi10.1016/j.heliyon.2018.e00801
dc.identifier.endpagee00801-17en
dc.identifier.issn2405-8440
dc.identifier.issued9en
dc.identifier.journaltitleHeliyonen
dc.identifier.startpagee00801-1en
dc.identifier.urihttps://hdl.handle.net/10468/6974
dc.identifier.volume4en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S240584401831199X
dc.rights© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY licenseen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectMaterials scienceen
dc.subjectElectrodesen
dc.subjectPolyaniline (PANI)-nickel hydroxideen
dc.subjectNi(OH)2en
dc.subjectMorphologyen
dc.titleHybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applicationsen
dc.typeArticle (peer-reviewed)en
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