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dc.contributor.authorKarhunen, Tommi
dc.contributor.authorVälikangas, Juho
dc.contributor.authorTorvela, Tiina
dc.contributor.authorLähde, Anna
dc.contributor.authorLassi, Ulla
dc.contributor.authorJokiniemi, Jorma
dc.date.accessioned2017-06-07T10:29:54Z
dc.date.available2017-06-07T10:29:54Z
dc.date.issued2016
dc.identifier.citationKarhunen, T., Välikangas, J., Torvela, T., Lähde, A., Lassi, U., & Jokiniemi, J. (2016). Effect of doping and crystallite size on the electrochemical performance of Li4Ti5O12. <i>Journal of Alloys and Compounds</i>, <i>659</i>, 132-137. <a href="https://doi.org/10.1016/j.jallcom.2015.10.125" target="_blank">https://doi.org/10.1016/j.jallcom.2015.10.125</a>
dc.identifier.otherCONVID_25326525
dc.identifier.otherTUTKAID_67962
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/54346
dc.description.abstractDefect spinel phase lithium titanate (Li4Ti5O12) has been suggested as a promising negative electrode material for next generation lithium ion batteries. Flame spray pyrolysis has been shown to be a viable fast, one-step process for synthesis of nanoparticulate Li4Ti5O12. However, due to the rapid quenching that is integral to the process the crystallite size remain very small and non-uniform. To overcome this shortcoming a vertical flow tube furnace was used to increase the high-temperature residence time. This resulted in an increase in the crystallite size and crystallinity of the product. As a result of this increase the electrochemical performance of the Li4Ti5O12 was markedly improved. Furthermore, silver doping of the Li4Ti5O12 material can be carried out simultaneously with its synthesis in the FSP process. The resulting nanosized silver particles on the surface of the Li4Ti5O12 particles further improve the electrochemical performance during high current operations. The specific capacities of these high-temperature synthesised pure and silver-doped Li4Ti5O12 nanoparticles were found to increase by up to 6% and 19%, respectively, compared to a commercial reference. Thus the technique provides a simple method for synthesising superior quality Li4Ti5O12 for battery applications.
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofseriesJournal of Alloys and Compounds
dc.subject.otherLi-ion battery
dc.subject.otherphase composition
dc.titleEffect of doping and crystallite size on the electrochemical performance of Li4Ti5O12
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201705312605
dc.contributor.laitosKokkolan yliopistokeskus Chydeniusfi
dc.contributor.laitosKokkola University Consortium Chydeniusen
dc.contributor.oppiaineSoveltavan kemian yksikköfi
dc.contributor.oppiaineThe Unit of Applied Chemistryen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2017-05-31T15:15:08Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange132-137
dc.relation.issn0925-8388
dc.relation.numberinseries0
dc.relation.volume659
dc.type.versionsubmittedVersion
dc.rights.copyright© 2016 Elsevier. This is a pre-print version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.subject.ysonanohiukkaset
dc.subject.ysosynteesi
jyx.subject.urihttp://www.yso.fi/onto/yso/p23451
jyx.subject.urihttp://www.yso.fi/onto/yso/p8467
dc.relation.doi10.1016/j.jallcom.2015.10.125
dc.type.okmA1


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