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大面积高性能薄膜固体氧化物燃料电池,通过可扩展的反应喷射进行纳米级阳极功能层
Kyoungjae Ju1, Seongkook Oh2,3, Jong Hyuk Lee4
1Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
概括
这项研究开发了一种薄膜固体氧化物燃料电池 (TF-SOFC) 具有纳米结构的阳极功能层 (n-AFL) 使用反应磁铁喷射. n-AFL显著提高了性能和功率密度,使低温运行高效.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 能源转换 能源转换
背景情况:
- 高性能薄膜固体氧化物电池 (TF-SOCs) 需要纳米结构的阳极功能层 (n-AFL) 来扩展三相边界 (TPB),特别是用于低温操作.
- 目前的n-AFL制造方法 (>1微米厚度) 在大规模生产和生产率方面面临挑战.
研究的目的:
- 在TF-SOC中展示n-AFL可扩展的制造方法.
- 通过使用反应磁铁子喷雾来优化n-AFL来提高TF-SOC的性能.
- 评估TF-SOC与n-AFL在大面积应用中的性能.
主要方法:
- 使用与大规模生产相容的反应磁铁子喷射制造n-AFL.
- 通过调整氧气部分压力和喷射功率来优化n-AFL.
- 使用和不使用n-AFL的TF-SOC在650°C的性能测试.
主要成果:
- 优化的n-AFL可使欧姆电阻和阳极电阻分别降低63%和34%.
- 在650°C时,最大功率密度增加了89% (1.333 W cm-2对比0.705 W cm-2).
- 一个大规模的 (4 × 4厘米) TF-SOFC与n-AFL在650°C达到19.4W.
结论:
- 反应磁铁子喷雾是一种可行的批量生产技术,用于TF-SOC中的n-AFL.
- 优化的n-AFL显著提高了TF-SOC的性能和输出功率.
- 这种方法使得高效,大面积的TF-SOC可用于实际的能源应用.
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