Please use this identifier to cite or link to this item: http://ir.lib.seu.ac.lk/handle/123456789/618
Title: A study of electrochemical behaviour of polypyrrole films in highly concentrated aqueous electrolytes
Authors: Jafeen, M.J.M.
Skaarup, S.
Careem, M.A.
Issue Date: 6-Jul-2013
Publisher: South Eastern University of Sri Lanka
Citation: Proceedings of the Third International Symposium 2013, pp. 69-75
Abstract: Polypyrrole polymer films doped with large surfactant anions, dodecyl benzene sulfonate, (PPy/DBS) can be used as soft actuators and their performance and stability depend on the type of the cycling electrolytes and their concentrations. In an attempt to discover suitable electrolytes for such actuators, the diffusion of counter ion into PPy/DBS films in various aqueous electrolytes has been investigated in this work. The PPy/DBS films were cycled at different scan rates in various alkali halide aqueous electrolytes having concentrations ranging from 0.1-1 M in order to determine the diffusion coefficients of alkali halide ions. The effective diffusion coefficients were found to increase with the concentration of the electrolytes and decrease with the increase in size of cations. Since the effective diffusion coefficient of counter ions is a direct measure of the speed of response when such films are used as electrodes in artificial muscles or in batteries, this finding is especially useful for the design of fast actuators based on PPy/DBS polymers.
URI: http://ir.lib.seu.ac.lk/handle/123456789/618
ISSN: 9789556270426
Appears in Collections:3rd International Symposium - 2013

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