Ln(Sr,Ca) 3(Fe,Co) 3O 10 intergrowth oxide cathodes for solid oxide fuel cells

J. H. Kim; Y. N. Kim; K. T. Lee; A. Manthiram

doi:10.1149/1.3570205

Ln(Sr,Ca) ₃(Fe,Co) ₃O ₁₀ intergrowth oxide cathodes for solid oxide fuel cells

J. H. Kim^*
, Y. N. Kim
, K. T. Lee
, A. Manthiram

^*Corresponding author for this work

Electronic Materials Engineering

University of Texas at Austin

Research output: Contribution to conference › Conference paper › peer-review

10 Scopus citations

Abstract

The perovskite-related intergrowth oxides Ln(Sr,Ca) ₃(Fe,Co) ₃O ₁₀, which belong to the n = 3 member of the Ruddlesden-Popper (R-P) series, have been explored as cathodes in solid oxide fuel cells (SOFC). The effects of cationic substitutions for Sr and Fe on the crystal chemistry, thermal properties, and electrochemical performances in SOFC have been investigated. The electrical conductivity, thermal expansion coefficient (TEC), and cathode performance increase with the substitution of Co for Fe. For instance, the LaSr ₃Fe _3-xCo _xO ₁₀ (LSFC) cathode composition shows electrochemical performances comparable to that of the well-known perovskite cathode La _0.6Sr _0.4CoO ₃. Further improvement in the cathode performance and a decrease in TEC have been realized by a substitution of less electropositive Ca for Sr in NdSr _2.5Ca _0.5Fe _1.5Co _1.5O ₁₀ (NSCFC). The improved performance of NSCFC is attributed to the decreased lattice distortion in the perovskite layer, which is beneficial to enhance the oxide-ion conductivity.

Original language	English
Title of host publication	Solid Oxide Fuel Cells 12, SOFC XII
Pages	2137-2145
Number of pages	9
Edition	3 PART 3
DOIs	https://doi.org/10.1149/1.3570205
State	Published - 2011
Event	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada Duration: 2011.05.1 → 2011.05.6

Publication series

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

Conference

Conference	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
Country/Territory	Canada
City	Montreal, QC
Period	11.05.1 → 11.05.6

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Access to Document

10.1149/1.3570205

Cite this

@inproceedings{3ce8b325bf594c9c9db1783b518a5af2,

title = "Ln(Sr,Ca) 3(Fe,Co) 3O 10 intergrowth oxide cathodes for solid oxide fuel cells",

abstract = "The perovskite-related intergrowth oxides Ln(Sr,Ca) 3(Fe,Co) 3O 10, which belong to the n = 3 member of the Ruddlesden-Popper (R-P) series, have been explored as cathodes in solid oxide fuel cells (SOFC). The effects of cationic substitutions for Sr and Fe on the crystal chemistry, thermal properties, and electrochemical performances in SOFC have been investigated. The electrical conductivity, thermal expansion coefficient (TEC), and cathode performance increase with the substitution of Co for Fe. For instance, the LaSr 3Fe 3-xCo xO 10 (LSFC) cathode composition shows electrochemical performances comparable to that of the well-known perovskite cathode La 0.6Sr 0.4CoO 3. Further improvement in the cathode performance and a decrease in TEC have been realized by a substitution of less electropositive Ca for Sr in NdSr 2.5Ca 0.5Fe 1.5Co 1.5O 10 (NSCFC). The improved performance of NSCFC is attributed to the decreased lattice distortion in the perovskite layer, which is beneficial to enhance the oxide-ion conductivity.",

author = "Kim, \{J. H.\} and Kim, \{Y. N.\} and Lee, \{K. T.\} and A. Manthiram",

year = "2011",

doi = "10.1149/1.3570205",

language = "English",

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series = "ECS Transactions",

number = "3 PART 3",

pages = "2137--2145",

booktitle = "Solid Oxide Fuel Cells 12, SOFC XII",

edition = "3 PART 3",

note = "12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting ; Conference date: 01-05-2011 Through 06-05-2011",

}

Kim, JH, Kim, YN, Lee, KT & Manthiram, A 2011, Ln(Sr,Ca) ₃(Fe,Co) ₃O ₁₀ intergrowth oxide cathodes for solid oxide fuel cells. in Solid Oxide Fuel Cells 12, SOFC XII. 3 PART 3 edn, ECS Transactions, no. 3 PART 3, vol. 35, pp. 2137-2145, 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting, Montreal, QC, Canada, 11.05.1. https://doi.org/10.1149/1.3570205

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T1 - Ln(Sr,Ca) 3(Fe,Co) 3O 10 intergrowth oxide cathodes for solid oxide fuel cells

AU - Kim, J. H.

AU - Kim, Y. N.

AU - Lee, K. T.

AU - Manthiram, A.

PY - 2011

Y1 - 2011

N2 - The perovskite-related intergrowth oxides Ln(Sr,Ca) 3(Fe,Co) 3O 10, which belong to the n = 3 member of the Ruddlesden-Popper (R-P) series, have been explored as cathodes in solid oxide fuel cells (SOFC). The effects of cationic substitutions for Sr and Fe on the crystal chemistry, thermal properties, and electrochemical performances in SOFC have been investigated. The electrical conductivity, thermal expansion coefficient (TEC), and cathode performance increase with the substitution of Co for Fe. For instance, the LaSr 3Fe 3-xCo xO 10 (LSFC) cathode composition shows electrochemical performances comparable to that of the well-known perovskite cathode La 0.6Sr 0.4CoO 3. Further improvement in the cathode performance and a decrease in TEC have been realized by a substitution of less electropositive Ca for Sr in NdSr 2.5Ca 0.5Fe 1.5Co 1.5O 10 (NSCFC). The improved performance of NSCFC is attributed to the decreased lattice distortion in the perovskite layer, which is beneficial to enhance the oxide-ion conductivity.

AB - The perovskite-related intergrowth oxides Ln(Sr,Ca) 3(Fe,Co) 3O 10, which belong to the n = 3 member of the Ruddlesden-Popper (R-P) series, have been explored as cathodes in solid oxide fuel cells (SOFC). The effects of cationic substitutions for Sr and Fe on the crystal chemistry, thermal properties, and electrochemical performances in SOFC have been investigated. The electrical conductivity, thermal expansion coefficient (TEC), and cathode performance increase with the substitution of Co for Fe. For instance, the LaSr 3Fe 3-xCo xO 10 (LSFC) cathode composition shows electrochemical performances comparable to that of the well-known perovskite cathode La 0.6Sr 0.4CoO 3. Further improvement in the cathode performance and a decrease in TEC have been realized by a substitution of less electropositive Ca for Sr in NdSr 2.5Ca 0.5Fe 1.5Co 1.5O 10 (NSCFC). The improved performance of NSCFC is attributed to the decreased lattice distortion in the perovskite layer, which is beneficial to enhance the oxide-ion conductivity.

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