Electrochemical performance of (Ba0.5Sr0.5)0.9Sm0.1Co0.8Fe0.2O3−δ as an intermediate temperature solid oxide fuel cell cathode |
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Authors: | Shuyan Li Zhe Lü Na Ai Kongfa Chen Wenhui Su |
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Affiliation: | 1. Center for the Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, PR China;2. Department of Condensed Matter Physics, Jilin University, Changchun 130023, PR China;3. International Centre for Materials Physics, Academia Sinica, Shenyang 110015, PR China |
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Abstract: | This study presents the electrochemical performance of (Ba0.5Sr0.5)0.9Sm0.1Co0.8Fe0.2O3−δ (BSSCF) as a cathode material for intermediate temperature solid oxide fuel cells (IT-SOFC). AC-impedance analyses were carried on an electrolyte supported BSSCF/Sm0.2Ce0.8O1.9 (SDC)/Ag half-cell and a Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF)/SDC/Ag half-cell. In contrast to the BSCF cathode half-cell, the total resistance of the BSSCF cathode half-cell was lower, e.g., at 550 °C; the values for the BSSCF and BSCF were 1.54 and 2.33 Ω cm2, respectively. The cell performance measurements were conducted on a Ni-SDC anode supported single cell using a SDC thin film as electrolyte, and BSSCF layer as cathode. The maximum power densities were 681 mW cm−2 at 600 °C and 820 mW cm−2 at 650 °C. |
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Keywords: | Intermediate-temperature solid oxide fuel cell Sm0 2Ce0 8O1 9 Cathode material AC-impedance Perovskite oxide |
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