Microstructure and electrical conductivity of LaNi0.6Fe0.4O3 prepared by combustion synthesis routes
Source abstract
Abstract
Abstract The continuing development of new materials suitable for solid oxide fuel cells operating at about 650–800 °C is of great interest in recent days. The present investigation deals with the development of a perovskite composition–LaNi 0.6 Fe 0.4 O 3 (LNF)–prepared following two combustion synthesis routes: citrate-gel (LNC) and urea (LNU). The powders were sintered over a wide temperature range (900–1400 °C) and sintering behavior for LNC and LNU was compared. The thermal expansion coefficient (TEC), electrical and microstructural characteristics of LNF was thoroughly investigated. Electrical conductivities were found to be one and a half times higher than that of most commonly used cathode material, La(Sr)MnO 3 . Moreover, the TEC value of LNF was found to be ≈11.4×10 −6 K −1 at 800 °C. The study opens up a possibility of using LNF as a promising cell component for SOFC.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides
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References (17)
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1. H.U. Anderson, L.-W. Tai, C.C. Chen, M.M. Nasrallah, W. Huebner, Review of the structural and electrical properties of the (La,Sr)(Co,Fe)O3 system, in: M. Dokiya, O. Yamamoto, H. Tagawa, S.C. Singhal (Eds.), Proceedings of the Forth International Symposium on Solid Oxide Cells (SOFC-IV), PV 95-1, The Electrochemical Society Proceedings Series, Pennington, NJ, 1995, p. 375.10.1006/jssc.1995.1319 ↗
2. Evaluation of La–Sr–Co–Fe–O perovskites for solid oxide fuel cells and gas separation membranes10.1016/S0167-2738(00)00394-5 ↗
3. M.P. Pechini, Method of preparing lead and alkaline earth titanates and niobates and coating method using the same to form a capacitor, US Patent 3,330,697 (July 11, 1967).
4. Combustion synthesis of advanced materials. Part I. Reaction parameters10.1016/0079-6425(94)00011-5 ↗
5. Combustion synthesis of advanced materials. Part II. Classification, applications and modeling10.1016/0079-6425(94)00012-3 ↗
6. New materials for electronic engineering
7. Studies on combustion synthesized LaMnO3–LaCoO3 solid solution10.1016/S0025-5408(00)00212-9 ↗
8. High temperature superconductor materials for contact layers in solid oxide fuel cells. I. Sintering behavior and physical properties at operating temperatures10.1016/S1359-6454(00)00385-2 ↗
9. Low temperature sintering of La(Ca)CrO3 prepared by an autoignition process10.1016/S0167-577X(00)00098-7 ↗
10. G. Pudmich, W. Jungen, F. Tietz, Characterization of new ceramic anode materials for direct methane oxidation in SOFC, in: S.C. Singhal, M. Dokiya (Eds.), Proceedings of the Sixth International Symposium on Solid Oxide Cells (SOFC-VI), PV 99-19, The Electrochemical Society Proceedings Series, Pennington, NJ, 1999, p. 577.10.1149/199919.0577PV ↗
11. An investigation of LaNi1−xFexO3 as a cathode material for solid oxide fuel cells10.1016/S0167-2738(99)00222-2 ↗
12. M. Arakawa, R. Chiba, N. Kato, Y. Sakurai, T. Hirai, I. Yamada, New anode and cathode materials for highly efficient SOFCs, in: 1999 MRS Spring Meeting Abstracts, San Francisco, California, April 5–9, 1999, The Electrochemical Society, Pennington, NJ, 1999, p. 447.
13. Intermediate temperature SOFC—a promise for the 21st century10.1016/S0378-7753(97)02789-4 ↗
14. LaNi0.6Fe0.4O3as a cathode contact material for solid oxide fuel cells10.1007/s10008-002-0330-3 ↗
15. R.N. Basu, F. Tietz, E. Wessel, G. Blaβ, H.P. Buchkremer, D. Stöver, Interface reactions during co-firing of solid oxide fuel cell components, J. Mater. Process. Technol. 147 (2004) 85–89.10.1016/j.jmatprotec.2003.11.025 ↗
16. Updated JCPDS Database of the International Center for Diffraction Data, Newton Square, PA, USA, 1998.
17. Materials for solid oxide fuel cells