Rezumat articol ediţie STUDIA UNIVERSITATIS BABEŞ-BOLYAI

În partea de jos este prezentat rezumatul articolului selectat. Pentru revenire la cuprinsul ediţiei din care face parte acest articol, se accesează linkul din titlu. Pentru vizualizarea tuturor articolelor din arhivă la care este autor/coautor unul din autorii de mai jos, se accesează linkul din numele autorului.

Considering the possibility to use YBaCo₄O₇ as oxygen sensor in different environments, the study of electrochemical behaviour of this compound was extended for neutral aqueous solution. Cyclic voltammetry and electrochemical impedance spectroscopy have shown that the compound behaviour in neutral solution is different than that in alkaline one. Compound porosity was determined using BET technique and the results are in accordance with thermogravimetric studies carried out in oxygen flow for YBaCo₄O₇ compound, emphasizing the oxygen intake / release by YBaCo₄O₇. Correlating all these results, an electrochemical mechanism for YBaCo₄O₇ oxidation in neutral aqueous solution has been proposed.

Keywords: mixed oxides, YBaCo₄O₇, electrochemical behaviour of YBaCo₄O₇, cyclic voltammetry, electrochemical impedance spectroscopy, BET technique.