Electrochemical Oxidation of BaFeO2.5 to BaFeO3

Autor:	Mitsuhiro Hibino, Noritaka Mizuno, Tetsuichi Kudo, Yosuke Suga
Rok vydání:	2014
Předmět:	Chemistry General Chemical Engineering Inorganic chemistry Analytical chemistry Oxygen evolution chemistry.chemical_element Electrolyte Crystal structure Electrochemistry Oxygen Formula unit Perovskite (structure) Monoclinic crystal system
Zdroj:	Electrochimica Acta. 137:359-362
ISSN:	0013-4686
Popis:	Defect perovskite-type BaFeO 2.5 was oxidized to BaFeO 3 by an electrochemical method in an alkaline aqueous electrolyte at 25 °C. With increase in the charge transfer q (electrons/formula unit), BaFeO z showed monoclinic (at nearly q = 0), rhombohedral (at around q = 0.34), pseudo-cubic (at 0.78 ≤ q ≤ 0.89), and true cubic (at q ≥ 0.89) structures. While an oxygen evolution reaction (OER) started at ca. q = 0.80, the oxidation of BaFeO z could concurrently be continued with the OER and BaFeO 3 was obtained at q = 1.2. Further, the chemical potential of oxygen in BaFeO z could be estimated in the range of 2.5 ≤ z ≤ 2.87 without OER
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18d03077ec4b91f9eec007b1a3cbed51 https://doi.org/10.1016/j.electacta.2014.05.162 Zobrazit plný text záznamu Full Text from ScienceDirect