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dc.creatorJugović, Dragana
dc.creatorMilović, Miloš
dc.creatorIvanovski, Valentin N.
dc.creatorAvdeev, Max
dc.creatorDominko, Robert
dc.creatorJokić, Bojan M.
dc.creatorUskoković, Dragan
dc.identifier.issn0378-7753 (print)
dc.identifier.issn1873-2755 (electronic)
dc.description.abstractA composite powder Li2FeSiO4/C is synthesized through a solid state reaction at 750 C. The Rietveld crystal structure refinement is done in the monoclinic P2(1)/n space group. It is found that the crystal structure is prone to antisite defect where small part of iron ion occupies exclusively Li(2) crystallographic position, of two different lithium tetrahedral positions (Li(1) and Li(2)). This finding is also confirmed by Mossbauer spectroscopy study: the sextet evidenced in the Mossbauer spectrum is assigned to the iron ions positioned at the Li(2) sites. A bond-valence energy landscape calculation is used to predict the conduction pathways of lithium ions. The calculations suggest that Li conductivity is two-dimensional in the (101) plane. Upon galvanostatic cyclings the structure starts to rearrange to inverse,311 polymorph. (C) 2014 Elsevier B.V. All rights reserved.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/171001/RS//
dc.relationRepublic of Slovenia, Republic of Serbia [651-03-1251/2012-09/05]
dc.sourceJournal of Power Sourcesen
dc.subjectLithium iron silicate (Li2FeSiO4)en
dc.subjectCathode materialen
dc.subjectRietveld X-ray refinementen
dc.subjectMossbauer spectroscopyen
dc.subjectBond-valence energy landscapeen
dc.titleStructural study of monoclinic Li2FeSiO4 by X-ray diffraction and Mossbauer spectroscopyen
dcterms.abstractЈуговиц, Драгана; Ивановски Валентин; Миловиц, Милос; Ускоковић, Драган; Aвдеев, Маx; Доминко, Роберт; Јокиц, Бојан;

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