Low temperature preparation of LaNi 1-xFe xO 3 as new cathode material for SOFC - Advantage of liquid phase mixing method

Eiki Niwa; Chie Uematsu; Erina Miyashita; Takeshi Ohzeki; Takuya Hashimoto

doi:10.1149/1.3570183

Low temperature preparation of LaNi _1-xFe _xO ₃ as new cathode material for SOFC - Advantage of liquid phase mixing method

Eiki Niwa, Chie Uematsu, Erina Miyashita, Takeshi Ohzeki, Takuya Hashimoto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Preparation of LaNi _1-xFe _xO ₃, which is one of the candidate materials for solid oxide fuel cell cathodes with high electrical conductivity and resistance against Cr poisoning, was studied with liquid phase mixing method and solid state reaction method. Single phase LaNi _1-xFe _xO ₃ was successfully prepared irrespective of composition by low temperature sintering at 750°C with liquid phase mixing method, whereas large amounts of raw materials remained in the solid state reaction method by sintering at the same temperature. It can be ascribed to more homogenous cation distribution in raw powder materials prior to sintering with liquid phase mixing method. It has also been revealed that LaNi _1-xFe _xO ₃with x lower than 0.3 is thermodynamically unstable in air above 1000°C. LaNi _0.6Fe _0.4O ₃ showed superior property as cathode material with high electrical conductivity, thermodynamic stability and appropriate sintering property.

Original language	English
Title of host publication	Solid Oxide Fuel Cells 12, SOFC XII
Pages	1935-1943
Number of pages	9
Edition	3 PART 3
DOIs	https://doi.org/10.1149/1.3570183
Publication status	Published - 2011
Externally published	Yes
Event	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada Duration: May 1 2011 → May 6 2011

Publication series

Name	ECS Transactions
Number	3 PART 3
Volume	35
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
Country/Territory	Canada
City	Montreal, QC
Period	5/1/11 → 5/6/11

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.1149/1.3570183

Cite this

Low temperature preparation of LaNi _1-xFe _xO ₃ as new cathode material for SOFC - Advantage of liquid phase mixing method. / Niwa, Eiki; Uematsu, Chie; Miyashita, Erina et al.
Solid Oxide Fuel Cells 12, SOFC XII. 3 PART 3. ed. 2011. p. 1935-1943 (ECS Transactions; Vol. 35, No. 3 PART 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Niwa, E, Uematsu, C, Miyashita, E, Ohzeki, T & Hashimoto, T 2011, Low temperature preparation of LaNi _1-xFe _xO ₃ as new cathode material for SOFC - Advantage of liquid phase mixing method. in Solid Oxide Fuel Cells 12, SOFC XII. 3 PART 3 edn, ECS Transactions, no. 3 PART 3, vol. 35, pp. 1935-1943, 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting, Montreal, QC, Canada, 5/1/11. https://doi.org/10.1149/1.3570183

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abstract = "Preparation of LaNi 1-xFe xO 3, which is one of the candidate materials for solid oxide fuel cell cathodes with high electrical conductivity and resistance against Cr poisoning, was studied with liquid phase mixing method and solid state reaction method. Single phase LaNi 1-xFe xO 3 was successfully prepared irrespective of composition by low temperature sintering at 750°C with liquid phase mixing method, whereas large amounts of raw materials remained in the solid state reaction method by sintering at the same temperature. It can be ascribed to more homogenous cation distribution in raw powder materials prior to sintering with liquid phase mixing method. It has also been revealed that LaNi 1-xFe xO 3with x lower than 0.3 is thermodynamically unstable in air above 1000°C. LaNi 0.6Fe 0.4O 3 showed superior property as cathode material with high electrical conductivity, thermodynamic stability and appropriate sintering property.",

author = "Eiki Niwa and Chie Uematsu and Erina Miyashita and Takeshi Ohzeki and Takuya Hashimoto",

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AB - Preparation of LaNi 1-xFe xO 3, which is one of the candidate materials for solid oxide fuel cell cathodes with high electrical conductivity and resistance against Cr poisoning, was studied with liquid phase mixing method and solid state reaction method. Single phase LaNi 1-xFe xO 3 was successfully prepared irrespective of composition by low temperature sintering at 750°C with liquid phase mixing method, whereas large amounts of raw materials remained in the solid state reaction method by sintering at the same temperature. It can be ascribed to more homogenous cation distribution in raw powder materials prior to sintering with liquid phase mixing method. It has also been revealed that LaNi 1-xFe xO 3with x lower than 0.3 is thermodynamically unstable in air above 1000°C. LaNi 0.6Fe 0.4O 3 showed superior property as cathode material with high electrical conductivity, thermodynamic stability and appropriate sintering property.

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