Search results for "metallinc Interconnect"

Metallic interconnects for SOFC: effect of water vapour on oxidation resistance of differently coated alloys.

2008

The need of interconnect to separate fuel and oxidant gasses and connect individual cells into electrical series in a SOFC stack appears as one of the most important point in fuel cell technology. Due to their high electrical and thermal conductivities, thermal expansion compatibility with the other cell components and low cost, Ferritic Stainless Steels (FSS) are now considered to be among the most promising candidate materials as interconnects in SOFC stacks. Despite the formation at 800°C of a protective chromia Cr2O3 scale, it can transform in presence of water vapour in volatile chromium species leading to the lost of its protectiveness and then the degradation of the fuel cell. A prev…