The Effect of Phase Composition on the Transport Properties of Composites La0.8Sr0.2Fe0.7Ni0.3O3 − δ-Ce0.9Gd0.1O1.95 | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Effect of Phase Composition on the Transport Properties of Composites La0.8Sr0.2Fe0.7Ni0.3O3 − δ-Ce0.9Gd0.1O1.95 Full article

Journal

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

Output data

Year: 2011, Volume: 47, Number: 6, Pages: 663-670 Pages count : 8 DOI: 10.1134/S1023193511060097

Tags

Cathodic materials, Composites La 0.8Sr 0.2Fe 0.7Ni 0.3O 3-δ-Ce 0.9Gd 0.1O 1.95, Electrical conductivity relaxation, Oxygen diffusion, Oxygen exchange

Authors

Okhlupin Y.S. ¹ , Ananʹev M.V. ² , Uvarov N.F. ¹ , Bespalko Y.N. ³ , Pavlova S.N. ³ , Sadykov V.A. ³

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russia
2	Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 20, Yekaterinburg, 620219, Russia
3	Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, ul. akad. Lavrent’eva 5, Novosibirsk, 630090, Russia

Funding (1)

Siberian Branch of the Russian Academy of Sciences

Full conductivity, diffusion and oxygen exchange processes in composites (100 − x)La0.8Sr0.2Fe0.7Ni0.3O3 − δ−xCe0.9Gd0.1O1.95 (x is the volume fraction, 0 ≤ x ≤ 71.1%) at 700°C over the oxygen partial pressure range from 0.2 to 3 × 10−3 atm are studied by the electrical conductivity relaxation method. The composites’ conductivity was shown to decrease monotonically with the increasing of Ce0.9Gd0.1O1.95 fraction, while the oxygen chemical diffusion coefficient increased. The oxygen exchange constant is higher for the composites than for the individual phases of La0.8Sr0.2Fe0.7Ni0.3O3 − δ and Ce0.9Gd0.1O1.95. Possible reason of the dependence of the parameters D chem and k chem on the temperature, oxygen pressure, and the composite composition is the effect of the interface on the oxygen transfer processes. Most effective oxygen transfer occurs in the composites whose composition approaches La0.8Sr0.2Fe0.7Ni0.3O3 − δ-Ce0.9Gd0.1O1.95 (x = 71%).

Okhlupin Y.S. , Ananʹev M.V. , Uvarov N.F. , Bespalko Y.N. , Pavlova S.N. , Sadykov V.A.
The Effect of Phase Composition on the Transport Properties of Composites La0.8Sr0.2Fe0.7Ni0.3O3 − δ-Ce0.9Gd0.1O1.95
Russian Journal of Electrochemistry. 2011. V.47. N6. P.663-670. DOI: 10.1134/S1023193511060097 WOS Scopus РИНЦ ANCAN OpenAlex

Охлупин Ю.С. , Ананьев М.В. , Уваров Н.Ф. , Беспалко Ю.Н. , Павлова С.Н. , Садыков В.А.
Влияние фазового состава на транспортные свойства композитов La0.8Sr0.2Fe0.7Ni0.3O3-Ce0.9Gd0.1O1.95
Электрохимия. 2011. Т.47. №6. С.709-716. РИНЦ

Submitted:	Jul 21, 2010
Published print:	Jun 1, 2011
Published online:	Jun 30, 2011

Web of science:	WOS:000292271000005
Scopus:	2-s2.0-84856277892
Elibrary:	18034440
Chemical Abstracts:	2011:818092
Chemical Abstracts (print):	155:341296
OpenAlex:	W2075876979

DB	Citing
Web of science	8
Scopus	9
Elibrary	9
OpenAlex	9