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 proceedingConference 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 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.

Original languageEnglish
Title of host publicationECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages1229-1234
Number of pages6
Edition1 PART 1
DOIs
Publication statusPublished - Dec 1 2007
Event10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
Duration: Jun 3 2007Jun 8 2007

Publication series

NameECS Transactions
Number1 PART 1
Volume7
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
CountryJapan
Period6/3/076/8/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    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