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Towards elucidating microscopic structural changes in Li-ion conductors Li1+yTi2–yAly[PO4 ]3 and Li1+yTi2–yAly[PO4 ]3–x [MO4 ]x(M=V and Nb) : X-ray and27Al and31P NMR studies Wong, Shan, Newman, Peter J., Best, A. S., Nairn, K. M., MacFarlane, D. R. and Forsyth, Maria 1998, Towards elucidating microscopic structural changes in Li-ion conductors Li1+yTi2–yAly[PO4 ]3 and Li1+yTi2–yAly[PO4 ]3–x [MO4 ]x(M=V and Nb) : X-ray and27Al and31P NMR studies, Journal of materials chemistry, vol. 8, no. 10, pp. 2199-2203. Attached Files Name Description MIMEType Size Downloads Title Towards elucidating microscopic structural changes in Li-ion conductors Li1+yTi2–yAly[PO4 ]3 and Li1+yTi2–yAly[PO4 ]3–x [MO4 ]x(M=V and Nb) : X-ray and27Al and31P NMR studies Formatted title Towards elucidating microscopic structural changes in Li-ion conductors Li1+yTi2–yAly[PO4 ]3 and Li1+yTi2–yAly[PO4 ]3–x [MO4 ]x(M=V and Nb) : X-ray and27Al and31P NMR studies Author(s) Wong, Shan Newman, Peter J. Best, A. S. Nairn, K. M. MacFarlane, D. R. Forsyth, Maria Journal name Journal of materials chemistry Volume number 8 Issue number 10 Start page 2199 End page 2203 Publisher Royal Society of Chemistry Place of publication Cambridge, England Publication date 1998 ISSN 0959-9428 1364-5501 1744-683X Summary A combination of X-ray powder diffraction (XRD) and nuclear magnetic resonance (NMR) studies has demonstrated that attempted substitutions of Al, V and Nb into the framework of LiTi2(PO4)3 yield several impurity phases in addition to direct substitutions of Al into Ti and V, Nb into P sites. Direct substitutions were confirmed by changes in the unit cell dimensions as indicated by the peak shifts observed in the X-ray diffractographs and by analyses of the 27Al and 31P magic angle spinning (MAS) spectra. A major impurity phase was identified as AlPO4 (found in at least two polymorphs) and the amount present increases with increasing Al additions. The formation of AlPO4 appeared to be enhanced by further V but suppressed by Nb substitution. These results suggest that the presence of AlPO4 , together with the non-stoichiometric modified LTP, may be the cause for the observed densification of this material upon sintering and the increased ionic conductivity. Language eng Field of Research 039999 Chemical Sciences not elsewhere classified Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©1998, Royal Society of Chemistry Persistent URL http://hdl.handle.net/10536/DRO/DU:30030295 Document type: Journal Article Collection: Institute for Technology Research and Innovation Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 10 Sep 2010, 15:11:50 EST Mon, 20 Sep 2010, 14:37:06 EST Mon, 20 Sep 2010, 14:38:33 EST Filtered Full Citation counts:   Cited 31 times in TR Web of Science Cited 33 times in Scopus Search Google Scholar Access Statistics: 275 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 10 Sep 2010, 15:11:49 EST

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