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Study on BaCo0.7Fe0.2Nb0.1O3−δ—SDC composite cathodes for intermediate temperature solid oxide fuel cell

✍ Scribed by Keguang Yao; Xiaomei Liu; Pei Li; Hui Liu; Lei Gao; Haopeng Wang; Minzhang Zheng; Wenhui Su

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
753 KB
Volume
36
Category
Article
ISSN
0360-3199

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✦ Synopsis

BaCo 0.7 Fe 0.2 Nb 0.1 O 3Àd (BCFN)/Ce 0.8 Sm 0.2 O 1.9 (SDC) composite material was prepared and characterized as cathode for intermediate temperature solid oxide fuel cells. The X-ray diffraction result proved that there was no obvious reaction between the BCFN and SDC after calcination at 1000 C for 10 h. AC impedance spectra based on La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3Àd (LSGM) electrolyte measured at intermediate temperatures showed that a cathode with 30 wt% SDC exhibited the best electrochemical performance among the electrodes studied. The interfacial resistance value for BCFN/30SDC was as low as 0.0104, 0.017, 0.029, and 0.062 U cm 2 at 800, 750, 700 and 650 C, respectively. The maximum power density of a single cell with BCFN/

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