p(O-2)-stability of LaFe1-xNixO3-delta solid solutions at 1100 degrees C / Kiselev E. A.,Cherepanov V. A. // JOURNAL OF SOLID STATE CHEMISTRY. - 2010. - V. 183, l. 9. - P. 1992-1997.

ISSN/EISSN:

0022-4596 / нет данных

Type:

Article

Abstract:

LaFe1-xNixO3-delta (X=0.1-1.0) perovskites were synthesized via citrate route. The p(O-2)-stability of the perovskite phases LaFe1-xNixO3-delta has been evaluated at 1100 degrees C based on the results of XRD analysis of powder samples annealed at various p(O-2) and quenched to room temperature. The isothermal LaFeO3-delta-{''}LaNiO3-delta{''} cross-section of the phase diagram of the La-Fe-Ni-O system has been proposed in the range of oxygen partial pressure -15 < log p(O-2)/atm <= 0.68. The unit cell parameters of orthorhombic perovskites O-LaFe1-xNixO3-delta increase with decrease in p(O-2) at fixed composition x. This behavior is explained on the basis of size factor. The decomposition temperatures of rhombohedral phases R-LaFe1-xNixO3-delta for x=0.7, 0.8, 0.9 and 1.0 in air were determined as 1137, 1086, 1060 and 995 degrees C, respectively. (C) 201 0 Elsevier Inc. All rights reserved.

Author keywords:

Perovskite; LaFe1-xNixO3-delta; Thermodynamic stability; Phase diagram OXIDE FUEL-CELLS; NI-O SYSTEM; PHASE-EQUILIBRIA; LANTHANUM CHROMITES; CRYSTAL-STRUCTURE; DEFECT STRUCTURE; CATHODE MATERIAL; STABILITY; SOFC; FE

DOI:

10.1016/j.jssc.2010.06.013

Web of Science ID:

ISI:000282139600013

Соавторы в МНС:

Другие поля

Поле	Значение
Month	SEP
Publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE
Address	525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
Language	English
Keywords-Plus	OXIDE FUEL-CELLS; NI-O SYSTEM; PHASE-EQUILIBRIA; LANTHANUM CHROMITES; CRYSTAL-STRUCTURE; DEFECT STRUCTURE; CATHODE MATERIAL; STABILITY; SOFC; FE
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Chemistry, Physical
Author-Email	Eugene.Kiselyov@usu.ru
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Funding-Acknowledgement	Russian Foundation for Basic Research {[}09-03-00620]; Ministry of Education and Science of the Russian Federation
Funding-Text	This work was financially supported in parts by the Russian Foundation for Basic Research (Project no. 09-03-00620) and Ministry of Education and Science of the Russian Federation. Experimental assistance made by A.A. Raskovalov is gratefully acknowledged.
Number-of-Cited-References	32
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	33
Journal-ISO	J. Solid State Chem.
Doc-Delivery-Number	654AD