We fabricated a uniquely designed anode-supported-type protonic ceramic fuel cell (PCFC) with a dual-electrolyte layer containing BaCe 0.9Y0.1O3-δ (BCY) as the higher-proton-conducting phase and BaZr0.85Y0.15O 3-δ (BZY) as the chemically stable protecting phase. In order to overcome the poor sinterability of the BZY electrolytes, which is a critical limitation in making thin and dense dual-electrolyte layers for anode-supported PCFCs, we employed aid-assisted enhanced sintering of BZY by adding 1 mol% of CuO. We also promoted the densification of the BZY layer by utilizing the higher sinterability of BCY that is attached to the top of the BZY layer. By properly adjusting the shrinkage behaviors of both the anode substrate and the dual-electrolyte layers, we were able to fabricate a fairly dense BZY/BCY dual-layer electrolyte with a thickness of less than 20 μm. In this paper, the novel strategies used to fabricate the PCFC based on dual-electrolyte layers are reported.
Bibliographical noteFunding Information:
This research was supported by the Fusion Research Program for Green Technologies through the National Research Foundation of Korea (NRF), funded by the Ministry of Education, Science and Technology ( 2011-0019297 ) and partially funded by the Institutional Research Program of KIST .
- Dual-layer electrolyte
- Fuel cells
- Proton conductor
- Sintering additive
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology