Design and Characterization of LSM/ScCeSZ Nanocomposite as Mixed Ionic–Electronic Conducting Material for Functionally Graded Cathodes of Solid Oxide Fuel Cells
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
17th International Conference on Solid State Ionics
28 июн. - 3 июл. 2009
,
Toronto
|
| Журнал |
Solid State Ionics
ISSN: 0167-2738
|
| Вых. Данные |
Год: 2011,
Том: 192,
Номер: 1,
Страницы: 540-546
Страниц
: 7
DOI:
10.1016/j.ssi.2010.08.015
|
| Ключевые слова |
Cathodes of solid oxide fuel cells, Mixed ionic-electronic conducting composites, Performance, Sc-Ce-doped zirconia, Sr-doped lanthanum manganite, Structure and surface properties, Transport properties |
| Авторы |
Sadykov V.
1,2
,
Alikina G.
1
,
Lukashevich A.
1
,
Muzykantov V.
1
,
Usoltsev V.
1
,
Boronin A.
1,2
,
Koshcheev S.
1
,
Krieger T.
1
,
Ishchenko A.
1
,
Smirnova A.
3
,
Bobrenok O.
4
,
Uvarov N.
5
|
| Организации |
| 1 |
Институт катализа им. Г.К. Борескова СО РАН
|
| 2 |
Новосибирский национальный исследовательский государственный университет
|
| 3 |
University of Connecticut
|
| 4 |
Институт теплофизики им. С.С. Кутателадзе СО РАН
|
| 5 |
Институт химии твердого тела и механохимии СО РАН
|
|
Информация о финансировании (3)
|
1
|
Президиум СО РАН
|
57
|
|
2
|
North Atlantic Treaty Organization
|
SfP-980878
|
|
3
|
Российский фонд фундаментальных исследований
|
09-03-12317
|
LSM/ScCeSZ nanocomposite was prepared via ultrasonic dispersion of the mixture of perovskite and fluorite powders in isopropanol in 1:1 ratio with addition of polyvinyl butyral. Studies of the real structure and surface property evolution at sintering under air up to 1100 °C revealed some redistribution of elements between the phases without new phase formation. Sizes of both phase domains remain in nanorange even in the dense material, thus providing a developed perovskite–fluorite interface. The surface layer of nanocomposite is enriched by LSM. The oxygen mobility and reactivity estimated by the oxygen isotope exchange and O2 TPD exceed those for LSM suggesting a positive role of interfaces as fast oxygen migration paths. Button-cell tests with the LSM/ScCeSZ interlayer between LSNF and a thin ScYSZ layer covering Ni/YSZ cermet demonstrated a high and stable performance promising practical application promising for practical application.