Low-Temperature Synthesis, Structural and Transport Properties of Doped LAMOX – Electrolytes for IT SOFS
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Conference |
13th International Symposium on Solid Oxide Fuel Cells
06-11 Oct 2013
,
Okinawa
|
| Journal |
ECS Transactions
ISSN: 1938-5862
, E-ISSN: 1938-6737
|
| Output data |
Year: 2013,
Volume: 57,
Number: 1,
Pages: 939-949
Pages count
: 11
DOI:
10.1149/05701.0939ecst
|
| Authors |
Pavlova Svetlana
1
,
Kharlamova Tamara
2
,
Bespalko Yulia
1
,
Krieger Tamara
1
,
Sadykov Vladislav
1,3
,
Chesalov Yurii
1
,
Ulikhin Artem
4
,
Uvarov Nikolai
4
,
Smirnova Alevtina
5
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
|
| 2 |
Tomsk State University, Tomsk, Russian Federation
|
| 3 |
Novosibirsk State University, Novosibirsk, Russian Federation
|
| 4 |
Institute of Solid State Chemistry SB RAS, Novosibirsk, Russian Federation
|
| 5 |
South Dakota School of Mines and Technology, Rapid City, SD 57701, USA
|
|
Funding (1)
|
1
|
European Commission
|
310750 FP7-NMP-2012-SMALL-6 THEBARCODE
|
Doped La2-xRxMo2-yWyO9 (R= Bi, Gd, Pr, Sm, Nd; x=0-0.5, y=0.5-1) were synthesized via polymerized precursors method or high power mechanical milling (MM). The study of doped LAMOX genesis and structural properties using thermal analysis, XRD, SEM, IR and Raman spectroscopy has revealed that for all cations but Bi substituting La-position, the pure cubic β-phase is formed from polymerized precursors after calcination at 700°C. W-doped LAMOX have been obtained via low temperature calcination of MM products depending on W concentration. Due to a high dispersion of powders, high density pellets of doped LAMOX ceramics have been already obtained after annealing at 950°C. Their electrical conductivity measured by impedance spectroscopy depends on the doping cation nature being sufficiently high (up to 5.6∙10-3 S/cm at 630 ºC) at temperature below 650°C.