La0.8Sr0.2Ni0.4Fe0.6O 3-Ce0.8Gd0.2O2-δ Nanocomposite as Mixed Ionic-Electronic Conducting Material for SOFC Cathode and Oxygen Permeable Membranes: Synthesis and Properties
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
1st Asian Symposium on Advanced Materials
01-04 Oct 2007
,
Владивосток
|
| Journal |
Composite Interfaces
ISSN: 0927-6440
, E-ISSN: 1568-5543
|
| Output data |
Year: 2009,
Volume: 16,
Number: 4,
Pages: 407-431
Pages count
: 25
DOI:
10.1163/156855409X450855
|
| Tags |
Characterization, Perovskite-fluorite nanocomposite, SOFC, Synthesis, Transport properties |
| Authors |
Sadykov Vladislav
1,2
,
Kharlamova Tamara
1
,
Batuev Lubsan
1
,
Muzykantov Vitalii
1
,
Mezentseva Nathalia
1
,
Krieger Tamara
1
,
Alikina Galina
1
,
Lukashevich Anton
1
,
Rogov Vladimir
1
,
Zaikovskii Vladimir
1
,
Ishchenko Arcady
1
,
Salanov Aleksei
1
,
Boronin Andrei
1
,
Koscheev Sergei
1
,
Pavlova Svetlana
1
,
Uvarov Nikolai
3
,
Smirnova Alevtina
4
,
Vasylyev Oleksandr
5
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS
|
| 2 |
Novosibirsk State University
|
| 3 |
Institute of Solid State Chemistry and Mechanochemistry SB RAS
|
| 4 |
University of Connecticut
|
| 5 |
Frantsevich Institute for Problems of Materials Science NASU
|
|
Funding (4)
|
1
|
European Commission
|
20089 FP6-2004-ENERGY-3 SOFC600
|
|
2
|
Президиум СО РАН
|
95
|
|
3
|
North Atlantic Treaty Organization
|
SfP-980878
|
|
4
|
International Science and Technology Center
|
3234
|
Mixed ionic–electronic conducting nanocomposite La0.8Sr0.2Ni0.4Fe0.6O3 (LSNF)–Ce0.8Gd0.2O2–δ (GDC) was prepared via ultrasonic dispersion of nanocrystalline powders of perovskite and fluorite oxides in water with addition of surfactant, followed by drying and sintering up to 1300°C. Analysis of the real structure of nanocomposite (studied by XRD and TEM with EDX) and its surface composition (studied by XPS) revealed moderate redistribution of elements between phases favoring their epitaxy. Results of impedance spectroscopy, oxygen isotope exchange, O2 TPD and H2 TPR experiments revealed a positive effect of composite interfaces on the oxygen mobility and reactivity agreeing with the ambipolar transport behavior of MIEC composite. Preliminary testing of button-size cell with functionally graded LSNF–GDC cathode layer supported on thin YSZ layer covering Ni/YSZ cermet demonstrated high and stable performance, which is promising for its practical application.