Effect of Electrolyte Thickness of Thin Film Solid Oxide Fuel Cell on Nanostructure and Performance

IF 5.3 3区工程技术 Q1 ENGINEERING, MANUFACTURING

International Journal of Precision Engineering and Manufacturing-Green Technology Pub Date : 2024-03-15 DOI:10.1007/s40684-024-00600-4

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Abstract

Advances in nanotechnology have enabled solid oxide fuel cells to perform high-efficiency energy conversion at lower operating temperatures than before. In particular, the thin film electrolyte can effectively offset the drop in ion conductivity at a low operating temperature due to a reduced ion path. In this study, the performance difference of solid oxide fuel cells according to the thickness of these thin film electrolytes was compared. Thin film solid oxide fuel cells were fabricated with YSZ electrolytes of 3.3 μm, 4.0 μm, and 4.7 μm thickness using different sputtering deposition times. First, the thickness of the electrolyte affected the gas tightness. The OCV of the cell using the 3.3 μm, 4.0 μm, and 4.7 μm thick electrolyte showed 1.01 V, 1.03 V and 1.05 V respectively. As the sputter deposition time increased, the surface grain size of the YSZ electrolyte also increased, affecting both the electrolyte's ohmic and the electrode's polarization resistance. Therefore, the difference in the thickness of the electrolyte showed a dramatic difference in performance. The cells with 3.3 μm, 4.0 μm, and 4.7 μm thick electrolytes showed performances of 193 mW/cm², 99 mW/cm², and 57 mW/cm², respectively at 500 °C.

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薄膜固体氧化物燃料电池电解质厚度对纳米结构和性能的影响

摘要纳米技术的进步使固体氧化物燃料电池能够在比以前更低的工作温度下进行高效的能量转换。特别是，薄膜电解质可以有效抵消低工作温度下由于离子路径减少而导致的离子电导率下降。在这项研究中，比较了固体氧化物燃料电池的性能差异取决于这些薄膜电解质的厚度。利用不同的溅射沉积时间，分别用 3.3 μm、4.0 μm 和 4.7 μm 厚度的 YSZ 电解质制造了薄膜固体氧化物燃料电池。首先，电解质的厚度会影响气密性。使用 3.3 μm、4.0 μm 和 4.7 μm 厚电解质的电池的 OCV 分别为 1.01 V、1.03 V 和 1.05 V。随着溅射沉积时间的增加，YSZ 电解液的表面晶粒尺寸也随之增大，从而影响了电解液的欧姆电阻和电极的极化电阻。因此，电解质厚度的不同会导致性能的巨大差异。电解质厚度分别为 3.3 μm、4.0 μm 和 4.7 μm 的电池在 500 °C 时的性能分别为 193 mW/cm2、99 mW/cm2 和 57 mW/cm2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Precision Engineering and Manufacturing-Green Technology ENGINEERING, MANUFACTURING-ENGINEERING, MECHANICAL

CiteScore

10.30

自引率

9.50%

发文量

审稿时长

5.3 months

期刊介绍： Green Technology aspects of precision engineering and manufacturing are becoming ever more important in current and future technologies. New knowledge in this field will aid in the advancement of various technologies that are needed to gain industrial competitiveness. To this end IJPEM - Green Technology aims to disseminate relevant developments and applied research works of high quality to the international community through efficient and rapid publication. IJPEM - Green Technology covers novel research contributions in all aspects of "Green" precision engineering and manufacturing.