EFFECT OF DOPANTS ON CeO2 BASED SOLID STATE ELECTROLYTES FOR INTERMEDIATE TEMPERATURE ELECTROCHEMICAL DEVICES / Pikalova E. Yu.,Demin A. K.,Bamburov V. G.,Maragou V. I.,Tsiakaras P. E. // . - 2011. - V. 32, l. . - P. 23-34.

ISSN/EISSN:

0196-6219 / нет данных

Type:

Proceedings Paper

Abstract:

The present work aims at the investigation of the influence of different dopants' ionic radii and their concentration on both the lattice parameters and the density of Ce(1-x)Ln(x)O(2-delta) (x = 0-0.20; Ln = La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Yb) solid solutions, multi-component Ce(1-x)Ln(x/2)Ln(x/2)'O2-delta (x = 0-0.20; Ln = Sm, La, Gd and Ln' = Dy, Nd, Y), Ce-0.8(Sm1-xMx)(0.2)O2-delta (M= Ca, Sr; x=0.0-1.0) and Ce-0.8(Sm1-x-yBayMx)(0.2)O2-delta (M= Ca, Sr; x= 0, 0.15, 0.20; y=0.05, 0.1) systems. The electrical conductivity measurements of the samples were carried out by using the four-point dc technique in different atmosphere. Temperature and oxygen partial pressure were varied automatically by means of microprocessor system ZIRKONIA-318 in the range of 623 - 1173 K and 0.1-10(-23) atm, respectively. To describe the electrolytic properties of solid electrolytes the notation of the EDB (electorytic domain boundary) - the critical oxygen partial pressure (P-O2{*}) at which the values of the electronic and ionic components of conductivity are equal- is often used. The values of the critical partial pressure of oxygen for different compositions at 1023 K were calculated from dependences of total conductivity vs. oxygen partial pressure in proposal that ionic conductivity depends on dopand's concentration, but isn't influenced by P-O2.

Author keywords:

OXIDE DOPED CERIA; IONIC-CONDUCTIVITY; ELECTRICAL-PROPERTIES; LATTICE-PARAMETERS; FUEL-CELLS; SYSTEM; GD; SM

DOI:

нет данных

Web of Science ID:

ISI:000319672300003

Соавторы в МНС:

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Другие поля

Поле	Значение
Editor	Bansal, NP and Singh, P and Widjaja, S and Singh, D
Booktitle	ADVANCES IN SOLID OXIDE FUEL CELLS VII
Series	Ceramic Engineering and Science Proceedings
Note	8th International Symposium on Solid Oxide Fuel Cells: Materials, Science, and Technology, Daytona Beach, FL, JAN 23-28, 2011
Organization	Amer Ceram Soc, Engn Ceram Div
Publisher	AMER CERAMIC SOC
Address	735 CERAMIC PLACE, WESTERVILLE, OH 43081-8720 USA
Language	English
ISBN	978-1-118-09524-9; 978-1-118-05989-0
Keywords-Plus	OXIDE DOPED CERIA; IONIC-CONDUCTIVITY; ELECTRICAL-PROPERTIES; LATTICE-PARAMETERS; FUEL-CELLS; SYSTEM; GD; SM
Research-Areas	Electrochemistry; Energy \& Fuels; Materials Science
Web-of-Science-Categories	Electrochemistry; Energy \& Fuels; Materials Science, Ceramics
ResearcherID-Numbers	Bamburov, Vitaliy/J-3241-2017
ORCID-Numbers	Pikalova, Elena/0000-0001-8176-9417
Number-of-Cited-References	32
Usage-Count-Since-2013	3
Doc-Delivery-Number	BFF71