Solid oxide reversible cells (SORCs) using LaGaO3-based oxide electrolyte and oxide fuel electrode

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

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Activity of La0.8Sr0.2FeO3 (LSF) to the fuel electrode reaction in Solid Oxide Reversible Cells (SORCs) was investigated by using La0.9Sr0.1Ga0.8Mg0.2O3 (LSGM) and Ba0.6La0.4CoO3 (BLC) as electrolyte and air electrode, respectively. In electrolysis mode (SOEC), LSF electrode exhibited small overpotential under the atmosphere without H2 co-feeding; the current densities reached -1.42, -0.92, -0.36 A/cm2 at 1.4 V at 900, 800, 700 °C, respectively and H2 formation rate is well agreed with that estimated by Faraday's law. On the other hand, in the SOEC-SOFC reversible mode with the gas composition of 20% steam /20%H2/60%Ar, the maximum power densities of 0.42, 0.28, 0.11 W/cm2 were achieved at 900, 800 and 700°C, respectively. In addition, the cyclic reversible operation was also investigated at 800°C, and it was found that the cell showed high stability over 30 cycles. DC polarization measurement suggests that the exchange current density of LSF is 14 mA/cm2 at 700°C, which is almost the same with that of Ni-YSZ reported. XRD measurement and SEM observation after the reversible measurement suggest that LSF is highly stable under SOEC-SOFC cyclic operation condition. Therefore, LSF is promising as the fuel electrode for SORCs, although the conductivity is not sufficiently high as electrode.

元の言語英語
ホスト出版物のタイトル4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016
編集者Roshidah Rusdi, Mohd Sufri Mastuli, Nurhanna Badar, Norlida Kamarulzaman
出版者American Institute of Physics Inc.
ISBN(電子版)9780735415577
DOI
出版物ステータス出版済み - 9 11 2017
イベント4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016 - Langkawi, マレーシア
継続期間: 11 9 201611 11 2016

出版物シリーズ

名前AIP Conference Proceedings
1877
ISSN(印刷物)0094-243X
ISSN(電子版)1551-7616

その他

その他4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN 2016
マレーシア
Langkawi
期間11/9/1611/11/16

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • これを引用

    Ishihara, T. (2017). Solid oxide reversible cells (SORCs) using LaGaO3-based oxide electrolyte and oxide fuel electrode. : R. Rusdi, M. S. Mastuli, N. Badar, & N. Kamarulzaman (版), 4th International Conference on the Advancement of Materials and Nanotechnology, ICAMN IV 2016 [020001] (AIP Conference Proceedings; 巻数 1877). American Institute of Physics Inc.. https://doi.org/10.1063/1.4999851