Electrochemical behaviour of YBaCo4O7 in alkaline aqueous solution |
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| Authors: | Mircea Dan Valerie Pralong Nicolae Vaszilcsin Andrea Kellenberger Narcis Duteanu |
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| Affiliation: | 1. Faculty of Industrial Chemistry and Environmental Engineering, University “Politehnica” of Timisoara, P-ta Victoriei 2, 300006, Timisoara, Romania
2. Laboratoire CRISMAT, ENSICAEN, CNRS, Université de Caen, 6 Bd Maréchal Juin, 14050, Caen, France
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| Abstract: | The paper presents the electrochemical investigation of mixed oxide YBaCo4O7 in alkaline aqueous solution during oxygen insertion/release. The electrochemical behaviour of YBaCo4O7 has been studied by cyclic voltammetry and electrochemical impedance spectroscopy. In correlation with these techniques, the compound morphology was determined by scanning electron microscopy. Based on the results obtained, the electrochemical processes occurring at the interface mixed oxide (YBaCo4O7)/electrolyte solution have been identified, and furthermore a mechanism of YBaCo4O7 oxidation/reduction in alkaline aqueous solutions has been proposed. |
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