Effect of electrolyte cations on the charge transfer in films of prussian blue |
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| Authors: | V. V. Kondrat’ev A. V. Tikhomirova S. V. Yakovleva V. V. Malev |
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| Affiliation: | (1) St. Petersburg State University, Universitetskaya nab. 7/9, 199164 St. Petersburg, Russia |
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| Abstract: | Charge transfer in films of Prussian blue is studied by cyclic voltammetry and chronoamperometry at potentials of first (PB/PW) and second (PB/PY) redox processes in solutions of potassium, cesium, and ammonium nitrates (pH 4.0). The current relaxation following a film perturbation by a small-amplitude voltage pulse is analyzed with theoretical relationships obtained earlier for the charge transfer in redox polymers. Parameters, characterizing the charge transfer rate (formal diffusion coefficient, instantaneous current), are calculated and analyzed as a function of the film oxidation state and the supporting-electrolyte nature |
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