Voltammetric study of PrF3:Sr2+ and NdF3:Ba2+ solid electrolytes

M.S. Turaeva, I.V. Tarasenkova, N.I. Sorokin, M.M. Urchukova, I.V. Murin

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© 2015, Pleiades Publishing, Ltd.Studies of single crystals of nonstoichiometric fluorides of PrF3:Sr2+ and NdF3:Ba2+ in contact with a Pt electrode were carried out using the method of voltammetry with a linear potential sweep, chronoamperometry, and cyclic voltammetry. The reaction of gaseous oxygen reduction (GOR) at the PrF3:Sr2+/Pt interface was accompanied by appearance of mobile oxygen forms. The catalytic activity of PrF3:Sr2+ with respect to gaseous oxygen, same as CeF3:Sr2+, can be explained by variable valency of praseodymium and cerium fluoride, which creates opportunities for using them in oxygen and oxygen-containing gas sensors. The GOR reaction at the NdF3:Ba2+/Pt interface appeared as a result of anodic polarization. After charging at E = 3.2 V, the NdF3:Ba2+ single crystal was successfully used for fluorination of Sb and Ag. NdF3
Original languageEnglish
Pages (from-to)429-434
Number of pages6
JournalRussian Journal of Electrochemistry
Issue number5
StatePublished - 2015

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