Development of IT-SOFC based on lanthanum gallate electrolyte

J. Nishi, T. Inagaki, F. Nishiwaki, J. Kano, Y. Onishia, S. Yamasaki, K. Hiratab, M. Sato, T. Akbay, H. Eto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


The Kansai Electric Power Company, Inc. and Mitsubishi Materials Corporation started a joint research project for developing intermediate temperature (600°C to 800°C) solid oxide fuel cells (IT-SOFC) in 2001. High performance disk-type cells with lanthanum gallate-based electrolyte and a seal-less cell-stack design enable high efficiency operation at temperatures below 800°C. The development of 10 kW-class CHP system under a project supported by NEDO (New Energy and Industrial Technology Development Organization) was started in FY2004. In 2007, the performance test of the 10 kW-class system using town gas as fuel was undertaken. In this test, the electrical efficiency of 41 %HHV on AC power output of 10 kW and the overall efficiency of 82%HHV by recovering 60°C hot water were achieved. And the voltage degradation rate per 1, 000 hours was 1.08% after 3, 000 hours operation during the field test of the 10 kW-class system. Furthermore, after making some refinements to enhance the performance of 10 kW-class module, the second long-term stability test for 3, 000 hours was carried out in 2008. Efforts to enhance cell and module durability were made with 1 kW-class modules operated for 5, 000 hours, and with the cell-stack units operated for 15, 000 hours. The voltage degradation rates per 1, 000 hours were 0.51 % for the 1 kW-class modules, and 0.23-0.48% for the cell-stack units.

Original languageEnglish
Title of host publicationECS Transactions - Fuel Cell Seminar 2008
PublisherElectrochemical Society Inc.
Number of pages15
ISBN (Electronic)9781607680796
ISBN (Print)9781566777292
Publication statusPublished - 2009
Externally publishedYes
Event2008 Fuel Cell Seminar and Exposition - Phoenix, AZ, United States
Duration: Oct 27 2008Oct 31 2008

Publication series

NameECS Transactions
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


Other2008 Fuel Cell Seminar and Exposition
Country/TerritoryUnited States
CityPhoenix, AZ

All Science Journal Classification (ASJC) codes

  • General Engineering


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