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dc.creatorGeorgijević, Radovan
dc.creatorVujković, Milica
dc.creatorGutić, Sanjin J.
dc.creatorAliefendić, Meho
dc.creatorJugović, Dragana
dc.creatorMitrić, Miodrag
dc.creatorĐokić, Veljko R.
dc.creatorMentus, Slavko V.
dc.date.accessioned2018-11-13T07:15:42Z
dc.date.available2018-11-13T07:15:42Z
dc.date.issued2019
dc.identifier.issn0925-8388 (print)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/7936
dc.description.abstractTo contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45014/RS//en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45015/RS//en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS//en
dc.relationBilateral project Serbia-Slovenia “Developments of novel materials for alkaline-ion batteries”
dc.relationSerbian Academy of Sciences and Arts “Electrocatalysis in the contemporary process of energy conversion”
dc.rightsrestrictedAccess
dc.sourceJournal of Alloys and Compoundsen
dc.subjectOlivine LiFePO4en
dc.subjectAqueous electrolyteen
dc.subjectKinetics of lithium redox behaviouren
dc.titleThe influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solutionen
dc.typearticleen
dc.rights.licenseARRen
dcterms.abstractЂокић, Вељко Р.; Георгијевић, Радован; Гутић, Сањин Ј.; Aлиефендић, Мехо; Вујковић, Милица; Југовић, Драгана; Митрић, Миодраг; Ментус, Славко В.;
dc.rights.holder© 2018 Elsevier B.V.
dc.citation.volume776
dc.citation.spage475
dc.citation.epage485
dc.identifier.doi10.1016/j.jallcom.2018.10.246
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85055737904


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