Abstract
In the commercialization of the solid oxide fuel cell (SOFC) technology, the long-term stability and the use of hydrocarbon fuels are important. An 18-layer SOFC stack with anode-supported cells was first designed, assembled and operated in Huatsing Power Co., Ltd in China. After the basic performance test with H2, the stack was operated at 750 °C with a 14.53 L/min hydrocarbon fuel for nearly 800 hours. The voltage degradation rate was only 1.42%/kh. Post analysis was performed through SEM and EDS. Microstructures of Ni particles with different degree of carbon deposition at the fuel inlet were observed and discussed. A phenomenon of rainbow-shaped color distributions on the surfaces of anode and nickel mesh in every layer was found. This phenomenon was related to the oxidation of the upper part of the nickel contact layer. Due to the light interference taking place at the nickel-oxide-air interfaces, different thickness of oxide film led to different colors. Carbon deposition and oxide film of nickel contact layer with non-uniform thickness were the possible causes of degradation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
