Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte

Masami Kawasaki; Norihisa Chitose; Jun Akikusa; Taner Akbay; Hiroyuki Eto; Tom Inagaki; Tatsumi Ishihara

doi:10.1149/1.2729223

Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte

Masami Kawasaki, Norihisa Chitose, Jun Akikusa, Taner Akbay, Hiroyuki Eto, Tom Inagaki, Tatsumi Ishihara

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

3 Citations (Scopus)

Abstract

A new research and development program to increase the output power density of cell-stack of intermediate-temperature (IT) solid oxide fuel cells (SOFCs) has been started. In order to increase the mechanical strength of the lanthanum gallate electrolyte, starting powder preparation methods and sintering temperature were examined. Manufacturing of dense ceramic bodies with smaller grain sizes was enabled using smaller submicron powder source. An alternative cathode material, lanthanum doped barium cobaltite, and the effects of dispersed Ag particles were investigated. Power generation characteristics were measured as a function of the dopant concentration in Ba_1-xLa _xCoO_3-δ. Although observed variation between x = 0.3 and 0.5 was insignificant, the maximum terminal voltage was obtained at x = 0.5. Using Ag-dispersed Ba_0.5La_0.5CoO_3-δ cathode, output power density of 0.4 W/cm₂ was obtained at the current density of 0.5 A/cm₂ at 750°C for hydrogen fuel.

Original language	English
Title of host publication	ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages	1229-1234
Number of pages	6
Edition	1 PART 1
DOIs	https://doi.org/10.1149/1.2729223
Publication status	Published - 2007
Event	10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan Duration: Jun 3 2007 → Jun 8 2007

Publication series

Name	ECS Transactions
Number	1 PART 1
Volume	7
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Other

Other	10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Country/Territory	Japan
Period	6/3/07 → 6/8/07

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1149/1.2729223

Cite this

Kawasaki, M., Chitose, N., Akikusa, J., Akbay, T., Eto, H., Inagaki, T., & Ishihara, T. (2007). Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte. In ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X (1 PART 1 ed., pp. 1229-1234). (ECS Transactions; Vol. 7, No. 1 PART 1). https://doi.org/10.1149/1.2729223

Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte. / Kawasaki, Masami; Chitose, Norihisa; Akikusa, Jun et al.
ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X. 1 PART 1. ed. 2007. p. 1229-1234 (ECS Transactions; Vol. 7, No. 1 PART 1).

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

Kawasaki, M, Chitose, N, Akikusa, J, Akbay, T, Eto, H, Inagaki, T & Ishihara, T 2007, Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte. in ECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X. 1 PART 1 edn, ECS Transactions, no. 1 PART 1, vol. 7, pp. 1229-1234, 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X, Japan, 6/3/07. https://doi.org/10.1149/1.2729223

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abstract = "A new research and development program to increase the output power density of cell-stack of intermediate-temperature (IT) solid oxide fuel cells (SOFCs) has been started. In order to increase the mechanical strength of the lanthanum gallate electrolyte, starting powder preparation methods and sintering temperature were examined. Manufacturing of dense ceramic bodies with smaller grain sizes was enabled using smaller submicron powder source. An alternative cathode material, lanthanum doped barium cobaltite, and the effects of dispersed Ag particles were investigated. Power generation characteristics were measured as a function of the dopant concentration in Ba1-xLa xCoO3-δ. Although observed variation between x = 0.3 and 0.5 was insignificant, the maximum terminal voltage was obtained at x = 0.5. Using Ag-dispersed Ba0.5La0.5CoO3-δ cathode, output power density of 0.4 W/cm2 was obtained at the current density of 0.5 A/cm2 at 750°C for hydrogen fuel.",

author = "Masami Kawasaki and Norihisa Chitose and Jun Akikusa and Taner Akbay and Hiroyuki Eto and Tom Inagaki and Tatsumi Ishihara",

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AU - Eto, Hiroyuki

AU - Inagaki, Tom

AU - Ishihara, Tatsumi

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N2 - A new research and development program to increase the output power density of cell-stack of intermediate-temperature (IT) solid oxide fuel cells (SOFCs) has been started. In order to increase the mechanical strength of the lanthanum gallate electrolyte, starting powder preparation methods and sintering temperature were examined. Manufacturing of dense ceramic bodies with smaller grain sizes was enabled using smaller submicron powder source. An alternative cathode material, lanthanum doped barium cobaltite, and the effects of dispersed Ag particles were investigated. Power generation characteristics were measured as a function of the dopant concentration in Ba1-xLa xCoO3-δ. Although observed variation between x = 0.3 and 0.5 was insignificant, the maximum terminal voltage was obtained at x = 0.5. Using Ag-dispersed Ba0.5La0.5CoO3-δ cathode, output power density of 0.4 W/cm2 was obtained at the current density of 0.5 A/cm2 at 750°C for hydrogen fuel.

AB - A new research and development program to increase the output power density of cell-stack of intermediate-temperature (IT) solid oxide fuel cells (SOFCs) has been started. In order to increase the mechanical strength of the lanthanum gallate electrolyte, starting powder preparation methods and sintering temperature were examined. Manufacturing of dense ceramic bodies with smaller grain sizes was enabled using smaller submicron powder source. An alternative cathode material, lanthanum doped barium cobaltite, and the effects of dispersed Ag particles were investigated. Power generation characteristics were measured as a function of the dopant concentration in Ba1-xLa xCoO3-δ. Although observed variation between x = 0.3 and 0.5 was insignificant, the maximum terminal voltage was obtained at x = 0.5. Using Ag-dispersed Ba0.5La0.5CoO3-δ cathode, output power density of 0.4 W/cm2 was obtained at the current density of 0.5 A/cm2 at 750°C for hydrogen fuel.

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Lanthanum doped barium cobaltite as a novel cathode for intermediate-temperature SOFC using lanthanum gallate electrolyte

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