Simultaneous measurements of conductivity and thickness for polymer electrolyte films: a simulation study
Simultaneous measurements of conductivity and thickness for polymer electrolyte films: a simulation study
Planar cells provide an attractive alternative to traditional cylindrical cells for polymer electrolyte conductivity measurement as they not only allow sample quantity minimisation but also equilibration with vapour. They are also a key component in the parallel screening of combinatorially synthesised arrays of samples. A finite element simulation technique is used to calculate the complex cell constants of planar cells for a wide range of cell geometries. The real part and the phase of the cell impedance at the high frequency limit are identified as the most sensitive indicators of the polymer thickness, and thereby the cell constant, through which the measured impedance value yields the conductivity. Cell geometries are identified for which the conductivity may be determined in an optimally accurate fashion.
polymer electrolyte, impedance, finite element analysis, combinatorial screening, planar cells, microband electrodes, complex cell constant
13-23
Fitt, A.D.
51b348d7-b553-43ac-83f2-3adbea3d69ab
Owen, J.R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
2002
Fitt, A.D.
51b348d7-b553-43ac-83f2-3adbea3d69ab
Owen, J.R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
Fitt, A.D. and Owen, J.R.
(2002)
Simultaneous measurements of conductivity and thickness for polymer electrolyte films: a simulation study.
Journal of Electroanalytical Chemistry, 538-539, .
(doi:10.1016/S0022-0728(02)01174-9).
Abstract
Planar cells provide an attractive alternative to traditional cylindrical cells for polymer electrolyte conductivity measurement as they not only allow sample quantity minimisation but also equilibration with vapour. They are also a key component in the parallel screening of combinatorially synthesised arrays of samples. A finite element simulation technique is used to calculate the complex cell constants of planar cells for a wide range of cell geometries. The real part and the phase of the cell impedance at the high frequency limit are identified as the most sensitive indicators of the polymer thickness, and thereby the cell constant, through which the measured impedance value yields the conductivity. Cell geometries are identified for which the conductivity may be determined in an optimally accurate fashion.
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Published date: 2002
Keywords:
polymer electrolyte, impedance, finite element analysis, combinatorial screening, planar cells, microband electrodes, complex cell constant
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Local EPrints ID: 29132
URI: http://eprints.soton.ac.uk/id/eprint/29132
ISSN: 1572-6657
PURE UUID: 13b07366-1999-4519-9c5c-e518da8167cf
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Date deposited: 12 May 2006
Last modified: 16 Mar 2024 02:43
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Author:
A.D. Fitt
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