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New Interconnections for Planar Alloy-Separator Sofc Stacks

Published online by Cambridge University Press:  10 February 2011

Y.-T. Yamazaki ,
T. Namikawa ,
T. Ide ,
N. Oishi  and
O. Suzuki
Y.-T. Yamazaki
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226Japan, yamazaki@iem.titech.ac.jp
T. Namikawa
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226Japan, yamazaki@iem.titech.ac.jp
T. Ide
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226Japan, yamazaki@iem.titech.ac.jp
N. Oishi
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226Japan, yamazaki@iem.titech.ac.jp
O. Suzuki
Affiliation:
Department of Innovative and Engineered Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama, 226Japan, yamazaki@iem.titech.ac.jp
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Abstract

A new design of interconnections between air electrodes and alloy separators in planar stacks is presented. The edges of the air electrodes supporting the electrolyte films are connected, through thin LaCrO3 layers, with the edges of adjacent alloy separators. The electric current in the cell flows radially in the porous thick air electrodes of LSM. The LaCrO3 layers are connected with the alloy separators through nickel felt in the fuel gas atmosphere. By using these interconnections, we can overcome the corrosion problems caused by contacting air electrodes with alloy separators in conventional planar stacks.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 205
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1. Singhal, S. C., “Advances in Tubular Solid Oxide Fuel Cell Technology”, in Proc. 4th Int. Symp. on SOFC, (Dokiya, M., Yamamoto, O., Tagawa, H., Singhal, S. C., eds.), The Electrochemical Society, Inc., Pennington, NJ, Vol. 95–1, pp. 195–207 (1996).Google Scholar
2. Yamazaki, Y., Namikawa, T., Oishi, N., and Yamazaki, T., “Relaxation of Thermal Stresses in Planar SOFC Stacks”, in Proc. 4th Int. Symp. on SOFC, (Dokiya, M., Yamamoto, O., Tagawa, H., Singhal, S. C., eds.), The Electrochemical Society, Inc., Pennington, NJ, Vol. 95–1, pp.236–244. (1996).Google Scholar
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