Methods of Isotopic Relaxations for Estimation of Oxygen Diffusion Coefficients in Solid Electrolytes and Materials with Mixed Ionic-Electronic Conductivity | Sciact - CRIS-система Института катализа

Methods of Isotopic Relaxations for Estimation of Oxygen Diffusion Coefficients in Solid Electrolytes and Materials with Mixed Ionic-Electronic Conductivity Научная публикация

Журнал

Russian Journal of Electrochemistry
ISSN: 1023-1935 , E-ISSN: 1608-3342

Вых. Данные

Год: 2015, Том: 51, Номер: 5, Страницы: 458-467 Страниц : 10 DOI: 10.1134/S1023193515050109

Ключевые слова

composites, doped cerium-zirconium oxides, doped lanthanum silicates, isotopic exchange of oxygen, mixed praseodymium nickelates-cobaltites, self-diffusion

Авторы

Sadykov V.A. ^1,2 , Sadovskaya E.M. ^1,2 , Uvarov N.F. ³

Организации

1	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, pr. akad. Lavrent’eva 5, Novosibirsk, 630090 Russia
2	Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090 Russia
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

Информация о финансировании (1)

Министерство образования и науки Российской Федерации

Theoretical basis of isotopic oxygen exchange in a gas-solid oxide system are considered. A generalized model is suggested that accounts for diffusion of tracer oxygen atoms and allows within a single approach to perform numeric analysis of isotope experiments implemented in reactors of various types and in different temperature modes. It is shown that when C18O2 is used as an isotopic reagent, the oxygen exchange rate on the metal oxide surface increases manifold (as compared to 18O2), which allows determining more precisely diffusion limitations in case of isotopic exchange of oxygen in the oxide bulk. Estimates of oxygen self-diffusion coefficients are obtained in dispersed systems based on doped cerium-zirconium oxides with a fluorite-type structure, doped lanthanum silicates with an apatite-type structure, and also mixed praseodymium nickelates-cobaltites and their composites with yttrium-doped ceria.

Sadykov V.A. , Sadovskaya E.M. , Uvarov N.F.
Methods of Isotopic Relaxations for Estimation of Oxygen Diffusion Coefficients in Solid Electrolytes and Materials with Mixed Ionic-Electronic Conductivity
Russian Journal of Electrochemistry. 2015. V.51. N5. P.458-467. DOI: 10.1134/S1023193515050109 WOS Scopus РИНЦ CAPlusCA OpenAlex

Садыков В.А. , Садовская Е.М. , Уваров Н.Ф.
Метод изотопных релаксаций для оценки коэффициентов диффузии кислорода в твердых электролитах и материалах со смешанной ионно-электронной проводимостью
Электрохимия. 2015. Т.51. №5. С.529-539. DOI: 10.7868/S0424857015050114 РИНЦ OpenAlex

Поступила в редакцию:	31 июл. 2014 г.
Опубликована в печати:	1 мая 2015 г.
Опубликована online:	30 мая 2015 г.

Web of science:	WOS:000355411900013
Scopus:	2-s2.0-84930204878
РИНЦ:	24039689
Chemical Abstracts:	2015:929283
Chemical Abstracts (print):	164:431938
OpenAlex:	W1935812609

БД	Цитирований
Web of science	28
Scopus	32
РИНЦ	30
OpenAlex	50