Comparative electrochemical charge storage properties of bulk and nanoscale vanadium oxide electrodes

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dc.contributor.author McNulty, David
dc.contributor.author Buckley, D. Noel
dc.contributor.author O'Dwyer, Colm
dc.date.accessioned 2018-05-09T11:57:37Z
dc.date.available 2018-05-09T11:57:37Z
dc.date.issued 2016-02-20
dc.identifier.citation McNulty, D., Buckley, D. N. and O’Dwyer, C. (2016) 'Comparative Electrochemical Charge Storage Properties of Bulk and Nanoscale Vanadium Oxide Electrodes', Journal of Solid State Electrochemistry, 20(5), pp. 1445-1458. doi: 10.1007/s10008-016-3154-2 en
dc.identifier.volume 20 en
dc.identifier.startpage 1445 en
dc.identifier.endpage 1458 en
dc.identifier.issn 1433-0768
dc.identifier.uri http://hdl.handle.net/10468/6048
dc.identifier.doi 10.1007/s10008-016-3154-2
dc.description.abstract Vanadium oxide nanostructures have been widely researched as a cathode material for Li-ion batteries due to their layered structure and shorter Li+ diffusion path lengths, compared to the bulk material. Some oxides exhibit charge storage due to capacitive charge compensation, and many materials with cation insertion regions and rich surface chemistry have complex responses to lithiation. Herein, detailed analysis by cyclic voltammetry was used to distinguish the charge stored due to lithium intercalation processes from extrinsic capacitive effects for micron-scale bulk V2O5 and synthesized nano-scale vanadium oxide polycrystalline nanorods (poly-NRs), designed to exhibit multivalent surface oxidation states. The results demonstrate that at fast scan rates (up to 500 mV/s), the contributions due to diffusion-controlled intercalation processes for micron-scale V2O5 and nanoscale V2O3 are found to dominate irrespective of size and multivalent surface chemistry. At slow potential scan rates, a greater portion of the redox events are capacitive in nature for the polycrystalline nanorods. Low dimensional vanadium oxide structures of V2O5 or V2O3, with greater surface area do not automatically increase their (redox) pseudocapacitive behaviour significantly at any scan rate, even with multivalent surface oxidation states. en
dc.description.sponsorship Higher Education Authority (INSPIRE programme, funded by the Irish Government’s Programme for Research in Third Level Institutions, Cycle 4, National Development Plan 2007–2013.) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Springer Verlag en
dc.relation.uri http://link.springer.com/article/10.1007/s10008-016-3154-2
dc.rights © Springer-Verlag Berlin Heidelberg 2016. This is a post-peer-review, pre-copyedit version of an article published in Journal of Solid State Electrochemistry. The final authenticated version is available online at: http://dx.doi.org/10.1007/s10008-016-3154-2 en
dc.subject Specific capacity en
dc.subject Vanadium Oxide en
dc.subject Intercalation process en
dc.subject Diffusion path length en
dc.subject Capacitive effect en
dc.title Comparative electrochemical charge storage properties of bulk and nanoscale vanadium oxide electrodes en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: c.odwyer@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2018-05-03T07:34:53Z
dc.description.version Accepted Version en
dc.internal.rssid 345716185
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Higher Education Authority en
dc.contributor.funder Seventh Framework Programme en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Solid State Electrochemistry en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress c.odwyer@ucc.ie en
dc.relation.project info:eu-repo/grantAgreement/SFI/Charles Parsons Energy Research Awards/06/CP/E007/IE/Charles Parsons Research Initiative & Graduate School/ en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Technology and Innovation Development Award (TIDA)/13/TIDA/E2761/IE/LiONSKIN - Moldable Li-ion battery outer skin for electronic devices/ en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP1::NMP/314508/EU/STable high-capacity lithium-Air Batteries with Long cycle life for Electric cars/STABLE en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Investigator Programme/14/IA/2581/IE/Diffractive optics and photonic probes for efficient mouldable 3D printed battery skin materials for portable electronic devices/ en


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