Solid electrolytes based on CeO(2) for medium-temperature electrochemical devices / Pikalova E. Yu.,Bamburov V. G.,Murashkina A. A.,Neuimin A. D.,Demin A. K.,Plaksin S. V. // RUSSIAN JOURNAL OF ELECTROCHEMISTRY. - 2011. - V. 47, l. 6. - P. 690-696.

ISSN/EISSN:

1023-1935 / нет данных

Type:

Article

Abstract:

CeO(2)-based solid solutions with a fluorite structure are promising materials as electrolytes of medium-temperature electrochemical devices: electrolytic cells, oxygen sensors, and solid oxide fuel cells. In this work, studies are presented of the effect of the dopant cation radius and its concentration on the physico-chemical properties of the Ce(1 - x) Ln (x) O(2 - delta) solid solutions (x = 0-0.20; Ln = La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Yb) and also of multicomponent solid solutions of Ce(1 - x) Ln (x/2)Ln' (x/2)O(2 - delta) (x = 0-0.20; Ln = Sm, La, Gd and Ln' = Dy, Nd, Y) and Ce(1 - x - y) Sm (x) M (y) O(2 - delta) (M = Ca, Sr, Ba) obtained using the solid-phase synthesis technique. Electric properties of the samples were studied in the temperature range of 623-1173 K and in the oxygen partial pressure range of 0.01-10(-22) MPa. The values of oxygen critical pressure (p(O2){*}) are presented, at which the ionic and electron conductivity values are equal. The values were calculated on the basis of experimental dependences at 1023 K at the assumption that the ionic conductivity value is determined only by the dopant concentration and its effective ionic radius and is independent of the oxygen partial pressure.

Author keywords:

oxygen conductivity; solid oxide electrolytes; ceria; electrolytic properties; medium-temperature electrochemical devices EARTH-DOPED CERIA; OXIDE FUEL-CELLS; IONIC-CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY

DOI:

10.1134/S1023193511060127

Web of Science ID:

ISI:000292271000009

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	EARTH-DOPED CERIA; OXIDE FUEL-CELLS; IONIC-CONDUCTIVITY; ELECTRICAL-CONDUCTIVITY
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	e.pikalova@rambler.ru
ResearcherID-Numbers	Murashkina, Anna/M-3075-2015 Bamburov, Vitaliy/J-3241-2017
ORCID-Numbers	Pikalova, Elena/0000-0001-8176-9417
Funding-Acknowledgement	Russian Foundation for Basic Research {[}09-03-00181]
Funding-Text	The work was financially supported by the Russian Foundation for Basic Research (project no. 09-03-00181).
Number-of-Cited-References	20
Usage-Count-Since-2013	4
Journal-ISO	Russ. J. Electrochem.
Doc-Delivery-Number	785ZF