Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17099
Title: Proton conducting intermediate-temperature solid oxide fuel cells using new perovskite type cathodes
Authors: Li, M
Ni, M 
Su, F
Xia, C
Keywords: Composite cathode
Intermediate temperature
Proton-conducting solid oxide fuel cells
Symmetrical fuel cells
Issue Date: 2014
Publisher: Elsevier
Source: Journal of power sources, 2014, v. 260, p. 197-204 How to cite?
Journal: Journal of power sources 
Abstract: Sr2Fe1.5Mo0.5O6-δ (SFM) is proposed as the electrodes for symmetric solid oxide fuel cells (SOFCs) based on oxygen-ion conducting electrolytes. In this work SFM is investigated as the cathodes for SOFCs with proton conducting BaZr0.1Ce 0.7Y0.2O3-δ (BZCY) electrolyte. SFM is synthesized with a combined glycine and citric acid method and shows very good chemical compatibility with BZCY under 1100 °C. Anode-supported single cell (Ni-BZCY anode, BZCY electrolyte, and SFM-BZCY cathode) and symmetrical fuel cell (SFM-BZCY electrodes and BZCY electrolyte) are fabricated and their performances are measured. Impedance spectroscopy on symmetrical cell consisting of BZCY electrolyte and SFM-BZCY electrodes demonstrates low area-specific interfacial polarization resistance Rp, and the lowest Rp, 0.088 Ω cm2 is achieved at 800 °C when cathode is sintered at 900 °C for 2 h. The single fuel cell achieves 396 mW cm-2 at 800 °C in wet H2 (3 vol% H2O) at a co-sintering temperature of 1000 °C. This study demonstrates the potential of SFM-BZCY as a cathode material in proton-conducting intermediate-temperature solid oxide fuel cells.
URI: http://hdl.handle.net/10397/17099
ISSN: 0378-7753
EISSN: 1873-2755
DOI: 10.1016/j.jpowsour.2014.03.013
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