Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7719341 | International Journal of Hydrogen Energy | 2014 | 6 Pages |
Abstract
A novel cathode material for proton conducting electrolyte based solid oxide fuel cells (SOFCs) of A-site deficient Ba0.9Co0.7Fe0.2Nb0.1O3âδ (BCFN) has been synthesized and characterized. The A-site deficient BCFN has demonstrated a thermal expansion coefficient (TEC) similar to that of BaZr0.1Ce0.7Y0.2O3âδ (BZCY) electrolyte, enhanced oxygen reduction activity and chemical stability. The application of BCFN in proton-conducting electrolyte-based SOFCs has been investigated, and the SOFCs with Ni-BZCY|BZCY|BCFN configuration demonstrate maximum cell power outputs of 180, 240 and 300 mW cmâ2 at 600, 650 and 700 °C, respectively. The cell polarization resistance is as low as 0.951, 0.387 and 0.201 Ω cm2 under open circuit voltage (OCV) at 600, 650 and 700 °C, respectively. The cell maximum power density increases from 300 to 356 mW cmâ2 at 700 °C after over 118 h operating under a constant current of 300 mA cmâ2.
Related Topics
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Authors
Chenghao Yang, Fei Zhao, Fanglin Chen, Meilin Liu,