Ni Infiltration as a Possible Solution to the Redox Problem of SOFC Anodes

In the present paper the use of Ni infiltration into preformed porous yttria-stabilized zirconia structures is investigated as a possible solution to the redox problem of Ni-based solid oxide fuel cell (SOFC) anodes and anode supports. It is shown that cermets containing Ni prepared by infiltration exhibited a conductivity above at room temperature, which dropped by 20% after one redox cycle, but was not accompanied by bulk dimensional changes. The dimensional stability is attributed to the properties of the microstructure that is produced by infiltration.