Design and Characterization of Functionally Graded Cathode Materials for Solid Oxide Fuel Cells
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
11th International Symposium on Solid Oxide Fuel Cells at 216th ECS Meeting
04-09 Oct 2009
,
Vienna
|
| Journal |
ECS Transactions
ISSN: 1938-5862
, E-ISSN: 1938-6737
|
| Output data |
Year: 2009,
Volume: 25,
Number: 2,
Pages: 2403-2412
Pages count
: 10
DOI:
10.1149/1.3205794
|
| Authors |
Sadykov V.
1,2
,
Pavlova S.
1
,
Zarubina V.
1,2
,
Bobin A.
1,2
,
Alikina G.
1
,
Lukashevich A.
1
,
Muzykantov V.
1
,
Usoltsev V.
1
,
Kharlamova T.
1
,
Boronin A.
1,2
,
Koscheev S.
1
,
Krieger T.
1
,
Ishchenko A.
1
,
Mezentseva N.
1
,
Salanov A.
1
,
Smirnova A.
3
,
Bobrenok O.
4
,
Uvarov N.
5
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia
|
| 2 |
Novosibirsk State University, Novosibirsk, 630090, Russia
|
| 3 |
Department of Chemical, Materials and Biomolecular Engineering, Connecticut Global Fuel Cell Center, University of Connecticut, Storrs, CT 06269-5233, USA
|
| 4 |
Institute of Thermophysics SB RAS, Novosibirsk, 630090, Russia
|
| 5 |
Institute of Solid State Chemistry and Mechanical Activation SB RAS Novosibirsk, 630058, Russia
|
|
Funding (1)
|
1
|
North Atlantic Treaty Organization
|
SfP-980878
|
This work presents results on synthesis and characterization of mixed ionic-electronic conducting nanocomposite cathode materials for Intermediate Temperature Solid Oxide Fuel Cells. The corresponding materials are comprised of La0.8Sr0.2MnO3 (LSM) or La0.8Sr0.2Fe1-xNixO3-δ (x=0.1-0.4) (LSFNx) perovskites and Sc0.1Ce0.01Zr0.89O2-x (ScCeSZ) or Ce0.9Gd0.1O2-δ (GDC) fluorites mixed via powerful ultrasonic dispersion of powders in isopropanol. Genesis of their structural properties was studied in detail by transmission electron microscopy with elemental analysis and X-ray diffraction; surface features were characterized by X-ray Photoelectron Spectroscopy. Perovskite-fluorite nanodomain interfaces appear to provide a path for fast oxygen diffusion as revealed by the oxygen isotope exchange and temperatureprogrammed desorption. Testing in wet H2/air for button-size fuel cells with thin Y-doped zirconia layer and nanocomposite functionally graded cathodes demonstrated promising and stable performance in some combinations in the intermediate temperature range.