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Manifestation of electrolyte ion size effect on electrochemical behavior of poly(ferrocenylsilane) films
Author(s) -
Wang XueJie,
Wang Li,
Wang JianJun,
Chen Tao
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.23320
Subject(s) - electrolyte , ion , electrochemistry , materials science , polymer , supporting electrolyte , chemical engineering , polymer chemistry , chemistry , electrode , organic chemistry , composite material , engineering
Abstract The influences of supporting electrolyte ion size on the cyclic voltammetric (CV) behavior of high‐molecular‐weight poly(ferrocenylsilane) films in organic solvents were investigated. Three supporting electrolytes with various ion sizes were tested. Electrolyte anions, as counter ions, take part in charge neutrality in the films, so that the size of anion affects the CV behavior of the films remarkably. The large anions are difficult to penetrate into the films, the resistances of the large ions migrating in films are more, the rates of the electroactive species diffusing in the films are slow, and the CV behavior of the polymer films exhibit irreversible features. The electrolyte cations do not take part in charge neutrality in the films, so that the size of cation does not actually affect the CV behavior of the films. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 515–523, 2006