Structural study of monoclinic Li2FeSiO4 by x-ray diffraction and Mössbauer spectroscopy

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dc.contributor.authorJugović, Den_AU
dc.contributor.authorMilović, Men_AU
dc.contributor.authorIvanovski, VNen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorDominko, Ren_AU
dc.contributor.authorJokić, Ben_AU
dc.contributor.authorUskoković, Den_AU
dc.date.accessioned2016-09-06T02:04:09Zen_AU
dc.date.available2016-09-06T02:04:09Zen_AU
dc.date.issued2014-11-01en_AU
dc.date.statistics2016-09-06en_AU
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 P21/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 Mössbauer spectroscopy study: the sextet evidenced in the Mössbauer 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 βII polymorph. © 2014, Elsevier B.V.en_AU
dc.identifier.citationJugović, D., Milović, M., Ivanovski, V. N., Avdeev, M., Dominko, R., Jokić, B., & Uskoković, D. (2014). Structural study of monoclinic Li2FeSiO4 by x-ray diffraction and Mössbauer spectroscopy. Journal of Power Sources, 265, 75-80. doi:10.1016/j.jpowsour.2014.04.121en_AU
dc.identifier.govdoc7063en_AU
dc.identifier.issn0378-7753en_AU
dc.identifier.journaltitleJournal of Power Sourcesen_AU
dc.identifier.pagination75-80en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jpowsour.2014.04.121en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/7461en_AU
dc.identifier.volume265en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectLithiumen_AU
dc.subjectCathodesen_AU
dc.subjectSpectroscopyen_AU
dc.subjectBondingen_AU
dc.subjectEnergy absorptionen_AU
dc.subjectIonsen_AU
dc.titleStructural study of monoclinic Li2FeSiO4 by x-ray diffraction and Mössbauer spectroscopyen_AU
dc.typeJournal Articleen_AU
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