The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

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.