Journal
SOLID STATE IONICS
Volume 154, Issue -, Pages 331-335Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-2738(02)00530-1
Keywords
conducting polymers; cyclic voltammetry; electrochemical quartz crystal microbalance; polypyrrole; ion movement
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The electrochemical characteristics during the redox process of polypyrrole (PPy) films, prepared using dodecylbenzenesulphonate (DBS-) dopant species, have been investigated using a combination of cyclic voltammetry and Electrochemical Quartz Crystal Microbalance (EQCM) measurements. Investigations were carried out using aqueous and non-aqueous electrolytes to study the effect of solvent on the ion movement during redox processes. When PPy films are cycled in aqueous electrolytes transport of both anion and cation occurs during oxidation and reduction. However, when cycled in the nonaqueous electrolyte propylene carbonate (PC) only anion movement takes place. (C) 2002 Elsevier Science B.V. All rights reserved.
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