Separation of two overlapping redox waves by cyclic-voltammo-thermometry: Applications to Cu/CuCl and Ag/AgCl systems in chloride solutions |
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| Authors: | Toru Ozeki Seiichiro Hikime Iwao Watanabe Shigero Ikeda |
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| Affiliation: | Hyogo University of Teacher Education, 942-1 Shimokume, Yashiro-cho, Kato-gun, Hyogo, 673-14 Japan;Department of Chemistry, Faculty of Science, Osaka University, Toyonaka, Osaka 560 Japan |
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| Abstract: | When two reactions take place at a given potential, other information is necessary, in addition to the relation between the applied potential and electric current, in order to evaluate the individual contribution of the reactions. Information about the heat evolved at the electrode during cyclic voltammetry enables the reaction components to be separated. It is concluded that the Cu/CuI redox system in chloride solution (0.1 < [Cl?] < 0.45 M) giving a simple CV curve, can be divided into two reactions: Cu/CuClad and Cu/CuCl?2. A similar overlap of the Ag/AgClad and Ag/AgCl?2 reactions is also observed for the Ag/AgI redox system in 7 < [Cl?] < 9 M solutions. |
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