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Optimization of Y2O3 dopant concentration of yttria stabilized zirconia thin film electrolyte prepared by plasma enhanced atomic layer deposition for high performance thin film solid oxide fuel cells

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  • Cho, Gu Young
  • Lee, Yoon Ho
  • Yu, Wonjong
  • An, Jihwan
  • Cha, Suk Won

Abstract

In this study, the Y2O3 doping concentration of yttria stabilized zirconia (YSZ) thin film electrolyte deposited by plasma enhanced atomic layer deposition (PEALD) is optimized to maximize the performance of thin film solid oxide fuel cells (TF-SOFCs). The PEALD YSZ thin films are highly crystalline, and the Y2O3 concentration is controlled by changing the ratio between ZrO2 and Y2O3 ALD cycles. Electrochemical performances of TF-SOFCs are strongly dependent on the Y2O3 doping concentration in electrolytes. The cell with 10.7 mol% doped YSZ achieves the best performance (180 mW/cm2) at 450 °C due to decreased polarization loss because of its higher density of oxygen vacancies. These results demonstrate the effectiveness of PEALD process to deposit crystalline YSZ thin film electrolytes with optimal doping for high performance TF-SOFCs.

Suggested Citation

  • Cho, Gu Young & Lee, Yoon Ho & Yu, Wonjong & An, Jihwan & Cha, Suk Won, 2019. "Optimization of Y2O3 dopant concentration of yttria stabilized zirconia thin film electrolyte prepared by plasma enhanced atomic layer deposition for high performance thin film solid oxide fuel cells," Energy, Elsevier, vol. 173(C), pages 436-442.
    • Handle: RePEc:eee:energy:v:173:y:2019:i:c:p:436-442
    DOI: 10.1016/j.energy.2019.01.124
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    References listed on IDEAS

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    1. Paek, Jun Yeol & Chang, Ikwhang & Park, Joon Ho & Ji, Sanghoon & Cha, Suk Won, 2014. "A study on properties of yttrium-stabilized zirconia thin films fabricated by different deposition techniques," Renewable Energy, Elsevier, vol. 65(C), pages 202-206.
    2. Park, Joonho & Lee, Yeageun & Chang, Ikwhang & Cho, Gu Young & Ji, Sanghoon & Lee, Wonyoung & Cha, Suk Won, 2016. "Atomic layer deposition of yttria-stabilized zirconia thin films for enhanced reactivity and stability of solid oxide fuel cells," Energy, Elsevier, vol. 116(P1), pages 170-176.
    3. Lee, Yeageun & Park, Joonho & Yu, Wonjong & Tanveer, Waqas Hassan & Lee, Yoon Ho & Cho, Gu Young & Park, Taehyun & Zheng, Chunhua & Lee, Wonyoung & Cha, Suk Won, 2018. "Nickel-based bilayer thin-film anodes for low-temperature solid oxide fuel cells," Energy, Elsevier, vol. 161(C), pages 1133-1138.
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    Cited by:

    1. Michal Carda & Nela Adamová & Daniel Budáč & Veronika Rečková & Martin Paidar & Karel Bouzek, 2022. "Impact of Preparation Method and Y 2 O 3 Content on the Properties of the YSZ Electrolyte," Energies, MDPI, vol. 15(7), pages 1-17, April.
    2. Romo Jiménez, Oscar Arturo & Noda, René López & Portelles, J. & Vázquez Arce, Jorge Luis & Iñiguez, Enrique & López Mercado, Cesar Alberto & Solorio, Fernando & Rebellon, Julia & Read, John & Tiznado,, 2022. "The effect of temperature and bias on the energy storage of a Ru/YSZ/Ru thin-film device," Energy, Elsevier, vol. 253(C).
    3. Koo, Taehyung & Kim, Young Sang & Lee, Dongkeun & Yu, Sangseok & Lee, Young Duk, 2021. "System simulation and exergetic analysis of solid oxide fuel cell power generation system with cascade configuration," Energy, Elsevier, vol. 214(C).

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