Please use this identifier to cite or link to this item: https://doi.org/10.1007/s10008-010-1126-5
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dc.titleNano-composites SnO(VO x ) as anodes for lithium ion batteries
dc.contributor.authorDas, B.
dc.contributor.authorReddy, M.V.
dc.contributor.authorSubba Rao, G.V.
dc.contributor.authorChowdari, B.V.R.
dc.date.accessioned2014-10-16T09:33:31Z
dc.date.available2014-10-16T09:33:31Z
dc.date.issued2011-02
dc.identifier.citationDas, B., Reddy, M.V., Subba Rao, G.V., Chowdari, B.V.R. (2011-02). Nano-composites SnO(VO x ) as anodes for lithium ion batteries. Journal of Solid State Electrochemistry 15 (2) : 259-268. ScholarBank@NUS Repository. https://doi.org/10.1007/s10008-010-1126-5
dc.identifier.issn14328488
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/97288
dc.description.abstractNano-composites of SnO(V 2O 3) x (x=0, 0.25, and 0.5) and SnO(VO) 0.5 are prepared from SnO and V 2O 3/VO by high-energy ball milling (HEB) and are characterized by X-ray diffraction (XRD), scanning electron microscopy, and high-resolution transmission electron microscopy techniques. Interestingly, SnO and SnO(VO) 0.5 are unstable to HEB and disproportionate to Sn and SnO 2, whereas HEB of SnO(V 2O 3) x gives rise to SnO 2.VO x . Galvanostatic cycling of the phases is carried out at 60 mAg -1 (0.12 C) in the voltage range 0.005-0.8 V vs. Li. The nano-SnO(V 2O 3) 0.5 showed a first-charge capacity of 435(±5)mAhg -1 which stabilized to 380(±5)mAhg -1 with no noticeable fading in the range of 10-60 cycles. Under similar cycling conditions, nano-SnO (x=0), nano-SnO(V 2O 3) 0.25, and nano-SnO(VO) 0.5 showed initial reversible capacities between 630 and 390(±5)mAhg -1. Between 10 and 50 cycles, nano-SnO showed a capacity fade as high as 59%, whereas the above two VO x -containing composites showed capacity fade ranging from 10% to 28%. In all the nano-composites, the average discharge potential is 0.2-0.3 V and average charge potential is 0.5-0.6 V vs. Li, and the coulombic efficiency is 96-98% after 10 cycles. The observed galvanostatic cycling, cyclic voltammetry, and ex situ XRD data are interpreted in terms of the alloying-de-alloying reaction of Sn in the nano-composite "Sn-VO x -Li 2O" with VO x acting as an electronically conducting matrix. © 2010 Springer-Verlag.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/s10008-010-1126-5
dc.sourceScopus
dc.subjectAnode
dc.subjectLi-ion batteries
dc.subjectNano-composite
dc.subjectSnO
dc.subjectSnO(VO x )
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1007/s10008-010-1126-5
dc.description.sourcetitleJournal of Solid State Electrochemistry
dc.description.volume15
dc.description.issue2
dc.description.page259-268
dc.identifier.isiut000287526800008
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