Solid state ion transport and phase behaviour in composites of N,N-methyl propylpyrrolidinium tetrafluoroborate and amorphous polyethylene oxide

Efthimiadis, Jim, Annat, Gary J., Efthimiadis, John, Forsyth, Maria and MacFarlane, Douglas R. 2003, Solid state ion transport and phase behaviour in composites of N,N-methyl propylpyrrolidinium tetrafluoroborate and amorphous polyethylene oxide, Physical chemistry chemical physics, vol. 5, no. 24, pp. 5558-5564.

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Title Solid state ion transport and phase behaviour in composites of N,N-methyl propylpyrrolidinium tetrafluoroborate and amorphous polyethylene oxide
Formatted title Solid state ion transport and phase behaviour in composites of N,N-methyl propylpyrrolidinium tetrafluoroborate and amorphous polyethylene oxide
Author(s) Efthimiadis, Jim
Annat, Gary J.
Efthimiadis, John
Forsyth, Maria
MacFarlane, Douglas R.
Journal name Physical chemistry chemical physics
Volume number 5
Issue number 24
Start page 5558
End page 5564
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2003
ISSN 1463-9076
1463-9084
Summary The binary and ternary addition of 2 wt.% LiBF4 and 2 wt.% amorphous polyethylene oxide (aPEO) respectively to the plastic crystal forming salt P13BF4 (where P13+=methylpropyl pyrrolidinium cation) was investigated with specific focus on the phase behaviour and evaluation of transport characteristics. Differential scanning calorimetry (DSC), optical thermomicroscopy, solid state nuclear magnetic resonance (NMR), and AC impedance spectroscopy were used to develop an understanding of the conduction process in the pure and mixed systems. The morphology of the ternary compound appeared as hexagonal spherulites upon solidification. Multinuclear NMR Pulsed Field Gradient measurements (1H,19F,7Li) to probe both cation and anion diffusion coefficients are reported. The anion is shown to be the most diffusive (at 320 K:19F=2.5×10−11 m2 s−1; 1H: 1.8×10−11 m2 s−1; 7Li: 1.1×10−11 m2 s−1) in the ternary compound, with enhanced conductivity (2.7×10−5 S cm−1 at 310 K) just below the melt.
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 ©2003, Owner Societies
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030105

Document type: Journal Article
Collection: Institute for Technology Research and Innovation
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