Lithium-functionalised silica nanoparticles for enhanced ionic conductivity in an organic ionic plastic crystal

Youssof Shekibi; Jennifer M. Pringle; Jiazeng Sun; Steven J. Pas; Nathalie M. Rocher; Bronya R. Clare; Anita J. Hill; Douglas R. MacFarlane; Maria Forsyth

doi:10.1039/B914884A

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Journal of Materials Chemistry

Issue 2, 2010

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Lithium-functionalised silica nanoparticles for enhanced ionic conductivity in an organic ionic plastic crystal

Youssof Shekibi , Jennifer M. Pringle , Jiazeng Sun , Steven J. Pas , Nathalie M. Rocher , Bronya R. Clare , Anita J. Hill , Douglas R. MacFarlane and Maria Forsyth

J. Mater. Chem., 2010, 20, 338-344

DOI: 10.1039/B914884A
Received 23 Jul 2009, Accepted 02 Oct 2009
First published on the web 04 Nov 2009

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Addition of silica nanoparticles functionalised with lithium propane sulfonate to the organic ionic plastic crystal N-ethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)amide ([C₂mpyr][NTf₂]) results in a significant increase in ionic conductivity. Analysis of these nanocomposites by impedance spectroscopy, NMR, positron annihilation lifetime spectroscopy (PALS) and Raman spectroscopy suggests that this is the result of higher matrix mobility due to an increase in defect size and concentration. The effect of these functionalised nanoparticles is compared to that previously observed for unfunctionalised nanoparticles in the lithium-doped and pure plastic crystal.

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Articles By

Youssof Shekibi
Jennifer M. Pringle
Jiazeng Sun
Steven J. Pas
Nathalie M. Rocher
Bronya R. Clare
Anita J. Hill
Douglas R. MacFarlane
Maria Forsyth

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Journal of Materials Chemistry

Lithium-functionalised silica nanoparticles for enhanced ionic conductivity in an organic ionic plastic crystal

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