Development status of planar SOFCs at Sanyo [electronic resource].

Published: Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1996.
Physical Description: pages 36-39 : digital, PDF file
Additional Creators: United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access

Free-to-read Unrestricted online access

Summary

A 2 kW class combined cell stacked module (182 cm² X 4X 17) was examined. An output power of 2.47 kW and output power density of 0.20 W/cm² were obtained at the current density of 0.3 A/cm². The temperature uniformity is an important factor to develop large scale SOFC modules. Therefore, in this 2 kW class module, one cell was divided into four smaller unit cells to decrease temperature difference across these cells. Moreover, an internal heat-exchanging duct was arranged to spend the surplus heat effectively in the middle of the module. As for the basic research, the followings were investigated to improve thermal cycle characteristics. One was to adopt a silica/alumina-based sealing, material in order to absorb the thermal expansion difference between the electrolyte and the separator. Deterioration was quite small after 12 thermal cycles with a 150 by 150 mm single cell. The other was to use a heat-resisting ferritic alloy as a separator in a 50 by 50 mm single cell in order to decrease the thermal expansion coefficient of the separator. High performance was obtained for 2000 hours at 900°C in an endurance test and deterioration was quite small after a thermal cycle.

Report Numbers

E 1.99:conf-961107--absts.
conf-961107--absts.

Subject(s)

Direct Energy Conversion

Other Subject(s)

Note

Published through SciTech Connect.
12/31/1996.
"conf-961107--absts."
"TI97001494"
Fuel cell seminar, Kissimmee, FL (United States), 17-20 Nov 1996.
Miyake, Yasuo; Akiyama, Yukinori; Yasuo, Takashi.
Fuel Cell Seminar Organizing Committee (United States)

View MARC record | catkey: 14067173