Electrochemical and chemical stability performance improvement of Ba0.5Sr0.5Fe0.91Al0.09O3-δ cathode for IT-SOFC through the introduction of a GDC interlayer

Yinglei Dai; Zhongliang Lou; Zhenhua Wang; Jinshuo Qiao; Wang Sun; Kening Sun

doi:10.1016/j.ijhydene.2015.02.131

Electrochemical and chemical stability performance improvement of Ba_0.5Sr_0.5Fe_0.91Al_0.09O_3-δ cathode for IT-SOFC through the introduction of a GDC interlayer

Yinglei Dai, Zhongliang Lou, Zhenhua Wang^*, Jinshuo Qiao, Wang Sun, Kening Sun

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

In order to enhance the electrochemical performance of solid oxide fuel cells (SOFCs), a Gd_0.2Ce_0.8O_2-δ (GDC) interlayer was introduced to Ba_0.5Sr_0.5Fe_0.91Al_0.09O_3-δ (BSFA) cathode. The chemical stability and microstructure of the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance was tested by impedance spectroscopy. The results show that BSFA cathode is chemically and mechanically stable with the existence of a GDC interlayer. The polarization resistance of BSFA cathode with a GDC interlayer was 0.3009 Ω cm² and the maximum power density (P_max) of an anode supported single cell reached 1321 mW cm^-2 at 750 °C. Furthermore, a BSFA-GDC composite cathode was prepared and presented excellent performance with the P_max of 1957 mW cm^-2 at 750 °C, providing a feasible choice for IT-SOFC cathodes.

Original language	English
Pages (from-to)	5939-5946
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	40
Issue number	17
DOIs	https://doi.org/10.1016/j.ijhydene.2015.02.131
Publication status	Published - 11 May 2015

Keywords

Cathode
Composite cathode
Interlayer
Solid oxide fuel cells (SOFCs)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2015.02.131

Cite this

@article{a76a8cb33be84dc083f1b2f89234d11f,

title = "Electrochemical and chemical stability performance improvement of Ba0.5Sr0.5Fe0.91Al0.09O3-δ cathode for IT-SOFC through the introduction of a GDC interlayer",

abstract = "In order to enhance the electrochemical performance of solid oxide fuel cells (SOFCs), a Gd0.2Ce0.8O2-δ (GDC) interlayer was introduced to Ba0.5Sr0.5Fe0.91Al0.09O3-δ (BSFA) cathode. The chemical stability and microstructure of the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance was tested by impedance spectroscopy. The results show that BSFA cathode is chemically and mechanically stable with the existence of a GDC interlayer. The polarization resistance of BSFA cathode with a GDC interlayer was 0.3009 Ω cm2 and the maximum power density (Pmax) of an anode supported single cell reached 1321 mW cm-2 at 750 °C. Furthermore, a BSFA-GDC composite cathode was prepared and presented excellent performance with the Pmax of 1957 mW cm-2 at 750 °C, providing a feasible choice for IT-SOFC cathodes.",

keywords = "Cathode, Composite cathode, Interlayer, Solid oxide fuel cells (SOFCs)",

author = "Yinglei Dai and Zhongliang Lou and Zhenhua Wang and Jinshuo Qiao and Wang Sun and Kening Sun",

note = "Publisher Copyright: {\textcopyright} 2015 Hydrogen Energy Publications, LLC.",

year = "2015",

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Electrochemical and chemical stability performance improvement of Ba_0.5Sr_0.5Fe_0.91Al_0.09O_3-δ cathode for IT-SOFC through the introduction of a GDC interlayer. / Dai, Yinglei; Lou, Zhongliang; Wang, Zhenhua et al.
In: International Journal of Hydrogen Energy, Vol. 40, No. 17, 11.05.2015, p. 5939-5946.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Electrochemical and chemical stability performance improvement of Ba0.5Sr0.5Fe0.91Al0.09O3-δ cathode for IT-SOFC through the introduction of a GDC interlayer

AU - Dai, Yinglei

AU - Lou, Zhongliang

AU - Wang, Zhenhua

AU - Qiao, Jinshuo

AU - Sun, Wang

AU - Sun, Kening

PY - 2015/5/11

Y1 - 2015/5/11

N2 - In order to enhance the electrochemical performance of solid oxide fuel cells (SOFCs), a Gd0.2Ce0.8O2-δ (GDC) interlayer was introduced to Ba0.5Sr0.5Fe0.91Al0.09O3-δ (BSFA) cathode. The chemical stability and microstructure of the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance was tested by impedance spectroscopy. The results show that BSFA cathode is chemically and mechanically stable with the existence of a GDC interlayer. The polarization resistance of BSFA cathode with a GDC interlayer was 0.3009 Ω cm2 and the maximum power density (Pmax) of an anode supported single cell reached 1321 mW cm-2 at 750 °C. Furthermore, a BSFA-GDC composite cathode was prepared and presented excellent performance with the Pmax of 1957 mW cm-2 at 750 °C, providing a feasible choice for IT-SOFC cathodes.

AB - In order to enhance the electrochemical performance of solid oxide fuel cells (SOFCs), a Gd0.2Ce0.8O2-δ (GDC) interlayer was introduced to Ba0.5Sr0.5Fe0.91Al0.09O3-δ (BSFA) cathode. The chemical stability and microstructure of the samples were characterized by X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performance was tested by impedance spectroscopy. The results show that BSFA cathode is chemically and mechanically stable with the existence of a GDC interlayer. The polarization resistance of BSFA cathode with a GDC interlayer was 0.3009 Ω cm2 and the maximum power density (Pmax) of an anode supported single cell reached 1321 mW cm-2 at 750 °C. Furthermore, a BSFA-GDC composite cathode was prepared and presented excellent performance with the Pmax of 1957 mW cm-2 at 750 °C, providing a feasible choice for IT-SOFC cathodes.

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KW - Interlayer

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