ELECTRICAL CONTACTS BETWEEN CATHODES AND METALLIC INTERCONNECTS IN SOLID OXIDE FUEL CELLS

Conference · Mon Nov 28 04:00:00 EST 2005

DOI:https://doi.org/10.1002/9780470291245.ch25· OSTI ID:1048627

Yang, Zhenguo; Xia, Guanguang; Stevenson, Jeffry W

To minimize electrical resistance and maximize power output, contact layers are often applied between interconnects and electrodes during construction of a SOFC stack. In this work, simulated cathode/interconnect structures were used to investigate the effects of different contact materials on the contact resistance between a LSF cathode and a Crofer22 APU interconnect. The results from the resistance measurements are reported and correlated to interfacial interactions occurring between the metallic interconnect and the contact materials, particularly perovskites. The materials requirements for the contact layers between cathodes and metallic interconnects in intermediate temperature SOFCs are also discussed.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1048627
• Report Number(s): PNNL-SA-44018; AA2530000
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CATHODES
CERAMICS
CONSTRUCTION
ELECTRIC CONDUCTIVITY
ELECTRODES
PEROVSKITES
SOFC
SOLID OXIDE FUEL CELLS
interconnect structures
interfacial resistencance
simulated cathode