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A high performance BaZr0.1Ce0.7Y0.2O 3-δ-based solid oxide fuel cell with a cobalt-free Ba 0.5Sr0.5FeO3-δ-Ce0.8Sm 0.2O2-δ composite cathode

Journal Article


Abstract


  • A cobalt-free Ba0.5Sr0.5FeO3-δ- Ce0.8Sm0.2O2-δ (BSF-SDC) composite is employed as a cathode for an anode-supported proton-conducting solid oxide fuel cells (H-SOFCs) using BaZr0.1Ce0.7Y0.2O 3-δ (BZCY) as the electrolyte. The chemical compatibility between BSF and SDC is evaluated. The XRD results show that BSF is chemically compatible with SDC after co-fired at 1000 °C for 6 h. A single cell with a 20-μm-thick BZCY electrolyte membrane exhibits excellent power densities as high as 792 and 696 mW cm-2 at 750 and 700 °C, respectively. To the best of our knowledge, this is the highest performance reported in literature up to now for BZCY-based single cells with cobalt-free cathode materials. Extremely low polarization resistances of 0.030 and 0.044 Ωcm2 are achieved at 750 and 700 °C respectively. The excellent performance implies that the cobalt-free BSF-SDC composite is a promising alternative cathode for H-SOFCs. Resistances of the tested cell are investigated under open circuit conditions at different operating temperatures by impedance spectroscopy. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

Publication Date


  • 2010

Citation


  • Sun, W., Shi, Z., Fang, S., Yan, L., Zhu, Z., & Liu, W. (2010). A high performance BaZr0.1Ce0.7Y0.2O 3-δ-based solid oxide fuel cell with a cobalt-free Ba 0.5Sr0.5FeO3-δ-Ce0.8Sm 0.2O2-δ composite cathode. International Journal of Hydrogen Energy, 35(15), 7925-7929. doi:10.1016/j.ijhydene.2010.05.084

Scopus Eid


  • 2-s2.0-77955512293

Start Page


  • 7925

End Page


  • 7929

Volume


  • 35

Issue


  • 15

Abstract


  • A cobalt-free Ba0.5Sr0.5FeO3-δ- Ce0.8Sm0.2O2-δ (BSF-SDC) composite is employed as a cathode for an anode-supported proton-conducting solid oxide fuel cells (H-SOFCs) using BaZr0.1Ce0.7Y0.2O 3-δ (BZCY) as the electrolyte. The chemical compatibility between BSF and SDC is evaluated. The XRD results show that BSF is chemically compatible with SDC after co-fired at 1000 °C for 6 h. A single cell with a 20-μm-thick BZCY electrolyte membrane exhibits excellent power densities as high as 792 and 696 mW cm-2 at 750 and 700 °C, respectively. To the best of our knowledge, this is the highest performance reported in literature up to now for BZCY-based single cells with cobalt-free cathode materials. Extremely low polarization resistances of 0.030 and 0.044 Ωcm2 are achieved at 750 and 700 °C respectively. The excellent performance implies that the cobalt-free BSF-SDC composite is a promising alternative cathode for H-SOFCs. Resistances of the tested cell are investigated under open circuit conditions at different operating temperatures by impedance spectroscopy. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

Publication Date


  • 2010

Citation


  • Sun, W., Shi, Z., Fang, S., Yan, L., Zhu, Z., & Liu, W. (2010). A high performance BaZr0.1Ce0.7Y0.2O 3-δ-based solid oxide fuel cell with a cobalt-free Ba 0.5Sr0.5FeO3-δ-Ce0.8Sm 0.2O2-δ composite cathode. International Journal of Hydrogen Energy, 35(15), 7925-7929. doi:10.1016/j.ijhydene.2010.05.084

Scopus Eid


  • 2-s2.0-77955512293

Start Page


  • 7925

End Page


  • 7929

Volume


  • 35

Issue


  • 15