Journal
ELECTROCHIMICA ACTA
Volume 56, Issue 23, Pages 8058-8068Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.02.068
Keywords
Polycrystalline platinum electrode; Constant phase element; Electrode capacitance; Current distribution; Impurities; Adsorption
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Constant phase element is still an object of controversy in the literature. It replaces capacitance or pseudocapacitance at solid electrodes. In the present paper influence of experimental parameters as cell geometry, distance between the working electrode and the Luggin capillary, surface roughness, and adsorption on the CPE parameters was studied. The obtained results indicate that the main cause of such behavior is adsorption of trace impurities from solution. (C) 2011 Elsevier Ltd. All rights reserved.
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