Chemical expansion of perovskite-type SOFC cathode materials / Tsvetkov D.S., Sereda V.V., Zuev A.Y. // EFC 2013 - Proceedings of the 5th European Fuel Cell Piero Lunghi Conference. - 2013. - V. , l. . - P. 231-232.

ISSN:

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Type:

Conference Paper

Abstract:

Mixed ionic and electronic conducting (MIEC) oxides can undergo both thermal expansion and that induced by the defects of oxygen nonstoichiometry in the oxide lattice. The latter is chemical or defect-induced expansion. This property is extremely sensitive to the defect structure of the oxide material. This paper shows theoretical approach which allows quantitative prediction of chemical expansion of MIEC oxides on the basis of a relative change of the mean ionic radius. In order to enable such computation modeling analysis of the defect structure of the La1-xSrxFe1-yByO3-δ(B=Co or Ni) oxide materials was carried out. The experimental data on chemical expansion and those calculated on the basis of the model proposed were shown to be in good agreement for all oxides investigated. Copyright © 2013 Delta Energy and Environment.

Author keywords:

Chemical expansion; MIEC; Oxygen nonstoichiometry; SOFC

Index keywords:

Cathodes; Defects; Oxygen; Solid oxide fuel cells (SOFC); Thermal expansion; Chemical expansion; Computation model; MIEC; Mixed ionic and electronic conducting; Oxygen non-stoichiometry; Quantitative

DOI:

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Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84926337621&partnerID=40&md5=cd1febe88d0e5839a17cf75e03d0165e

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Другие поля

Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84926337621&partnerID=40&md5=cd1febe88d0e5839a17cf75e03d0165e
Affiliations	Ural Federal University, Lenin Av. 51, Ekaterinburg, Russian Federation
Author Keywords	Chemical expansion; MIEC; Oxygen nonstoichiometry; SOFC
Funding Details	12-03-31317, RFBR, Russian Foundation for Basic Research
References	Zuev, A.Y., Vylkov, A.I., Petrov, A.N., Tsvetkov, D.S., Defect structure and defect-induced expansion of undoped oxygen deficient perovskite LaCoO3-δ (2008) Solid State Ionics, 179, pp. 1876-1879; Zuev, A.Y., Tsvetkov, D.S., Oxygen nonstoichiometry, defect structure and defect-induced expansion of undoped perovskite LaMnO3±δ (2010) Solid State Ionics, 181, pp. 557-563; Cherepanov, V., Aksenova, T., Kiselev, E., Gavrilova, L., Oxygen nonstoichiometry and defect structure of perovskite-type oxides in the La-Sr-Co-(Fe, Ni)-O systems (2008) Solid State Sciences, 10, pp. 438-443
Editors	Cigolotti V.Barchiesi C.Chianella M.
Publisher	ENEA
Conference name	5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013
Conference date	11 December 2013 through 13 December 2013
Conference code	110891
ISBN	9788882862978
Language of Original Document	English
Abbreviated Source Title	EFC - Proc. Eur. Fuel Cell Piero Lunghi Conf.
Source	Scopus