Fabrication and Characteristics of an Metallic Interconnector for Planar Type SOFC

평판형 고체산화물 연료전지용 금속 연결재 제조 및 특성

The metallic interconnector has a superior property than the ceramic interconnector in the point of the cell performance, but has problems to form oxide films on the interconnector surface during cell operation and induce cracking in the cell due to the stress by the thermal expansion coefficient difference with stabilized Zr electrolyte. For solving the problems in the metallic interconnector, new and modified materials have been investigated. In this paper, $LaCrO_3$ dispersed Cr was evaluated in high temperature oxidized characteristics, sintering density, electrical conductivity and various thermochemical properties. The test results show that $LaCrO_3$ dispersed Cr has more superior properties than that of conventional alloy interconnector and $LaCrO_3$ dispersed Cr can be used as an interconnector in SOFC.