Processing and characterizations of a novel proton-conducting BaCe0.35Zr0.50Y0.15O3-δ electrolyte and its nickel-based anode composite for anode-supported IT-SOFC

Ashok Kumar Baral, Sungmin Choi, Byung Kook Kim, Jong-Ho Lee
2014 Materials for Renewable and Sustainable Energy  
This work presents the synthesis and characterizations of a stable and well-sinterable proton conductor BaCe 0.35 Zr 0.50 Y 0.15 O 3-d in which a transition of conductivity occurred steeply from the order of 10 -3 to 10 -2 S cm -1 and activation energy changed from 0.35 to 0.22 eV in the temperature range from 350 to 400°C, due to the dissociation of protons from the dopant-proton defect pairs. The anode composite Ni-BaCe 0.35 Zr 0.50 Y 0.15 O 3-d (40:60 vol%) prepared by liquid condensation
more » ... uid condensation process showed comparatively very high electrical conductivity than the existing solid oxide fuel cell (SOFC) anodes, in the temperature range of 350-800°C. Fabrication (by screen printing and co-firing processes), performance and post-mortem analysis of anode-supported protonic SOFC cell using these materials are discussed elaborately.
doi:10.1007/s40243-014-0035-4 fatcat:dj7vgirwtza2jfbstdysu4qhju