Kinetics of the charge/discharge characteristics of redox flow battery electrolytes

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dc.contributor.authorModiba P.
dc.contributor.authorMatoetoe M.
dc.contributor.authorCrouch A.M.
dc.date.accessioned2011-10-13T16:58:59Z
dc.date.available2011-10-13T16:58:59Z
dc.date.issued2011
dc.description.abstractA comparison of the electrochemical behavior of Ce(IV) and its complexes of ethylenedi-aminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), ethylenedia-minedisuccinic acid (EDDS), and nitrilotriacetic acid (NTA) using cyclic voltammetry (CV) and rotating disc electrode (RDE) on Pt-electrode were carried out. All complexes had an anodic cathodic ratio greater than 1. The Ce(IV)-DTPA had the best properties: highest peak potential, better reversibility, and higher peak current. Potential usage of the Ce(IV)-DTPA in redox flow batteries (RFB) was confirmed by the electrochemical impedance spectroscopy results: lowest electrolyte and charge transfer resistance. The performance evaluation of RFB employing Ce(IV) and Ce(IV) complexes of DTPA and EDTA with constant current charge/discharge analysis proved that CE(IV)-DTPA complex has a potential as an anode in RFB. A maximum potential of 1V and a minimum voltage of 2 V were achieved. Highest energy, voltage, and coulombic efficiencies of 85%, 93%, and 92% were obtained, respectively. © Taylor & Francis Group, LLC.
dc.description.versionArticle
dc.identifier.citationAnalytical Letters
dc.identifier.citation44
dc.identifier.citation11
dc.identifier.citationhttp://www.scopus.com/inward/record.url?eid=2-s2.0-80051705578&partnerID=40&md5=157b6c2fd2341b8e9ca222ba5d44c41d
dc.identifier.issn32719
dc.identifier.other10.1080/00032719.2010.539728
dc.identifier.urihttp://hdl.handle.net/10019.1/16931
dc.subjectCE(IV)-DTPA
dc.subjectCerium
dc.subjectCharge=discharge
dc.subjectComplexes
dc.subjectElectrochemical impedance spectroscopy
dc.subjectRedox flow battery
dc.titleKinetics of the charge/discharge characteristics of redox flow battery electrolytes
dc.typeArticle
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