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Surprising effect of nanoparticle inclusion on ion conductivity in a lithium doped organic ionic plastic crystal Shekibi, Youssof, Pas, Steven J., Rocher, Nathalie M., Clare, Bronya R., Hill, Anita J., MacFarlane, Douglas R. and Forsyth, Maria 2009, Surprising effect of nanoparticle inclusion on ion conductivity in a lithium doped organic ionic plastic crystal, Journal of materials chemistry, vol. 19, no. 11, pp. 1635-1645. Attached Files Name Description MIMEType Size Downloads Title Surprising effect of nanoparticle inclusion on ion conductivity in a lithium doped organic ionic plastic crystal Author(s) Shekibi, Youssof Pas, Steven J. Rocher, Nathalie M. Clare, Bronya R. Hill, Anita J. MacFarlane, Douglas R. Forsyth, Maria Journal name Journal of materials chemistry Volume number 19 Issue number 11 Start page 1635 End page 1645 Publisher Royal Society of Chemistry Place of publication Cambridge, England Publication date 2009 ISSN 0959-9428 1364-5501 1744-683X Summary Doping lithium bis(trifluoromethanesulfonyl)amide (Li[NTf2]) into the N-ethyl,N′-methylpyrrolidinium bis(trifluoromethanesulfonyl)amide ([C2mpyr][NTf2]) plastic crystal material has previously indicated order of magnitude enhancements in ion transport and conductivity over pure [C2mpyr][NTf2]. Recently, conductivity enhancements in this ionic plastic crystal induced by SiO2 nanoparticles have also been reported. In this work the inclusion of SiO2 nanoparticles in Li ion doped [C2mpyr][NTf2] has been investigated over a wide temperature range by differential scanning calorimetry (DSC), impedance spectroscopy, positron annihilation lifetime spectroscopy (PALS), Raman spectroscopy, NMR spectroscopy and scanning electron microscopy (SEM). Solid state 1H NMR indicates that the addition of the nanoparticles increases the mobility of the [C2mpyr] cation and positron lifetime spectroscopy (PALS) measurements indicate an increase in mean defect size and defect concentration as a result of nanoparticle inclusion, especially with 10 wt% SiO2. Thus, the substantial drop in ion conductivity observed for this doped nanocomposite material was surprising. This decrease is most likely due to the decrease in mobility of the [NTf2] anion, possibly by its adsorption at the SiO2/grain boundary interface and concomitant decrease in mobility of the Li ion. 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 ©2009, Royal Society of Chemistry Persistent URL http://hdl.handle.net/10536/DRO/DU:30030254 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, 15:11:08 EST Mon, 20 Sep 2010, 12:15:29 EST Mon, 20 Sep 2010, 12:16:35 EST Mon, 20 Sep 2010, 12:19:47 EST Mon, 20 Sep 2010, 15:08:11 EST Filtered Full Citation counts:   Cited 13 times in TR Web of Science Cited 15 times in Scopus Search Google Scholar Access Statistics: 285 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 10 Sep 2010, 15:11:08 EST

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