用于固体氧化物燃料电池中尺度界面设计的温度控制微挤出印刷

Pub Date : 2023-06-25 DOI:10.1002/fuce.202200170
Cheng Ding, Haewon Seo, Masashi Kishimoto, Hiroshi Iwai
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引用次数: 1

摘要

提出了一种温度控制的微挤出印刷技术,以实现固体氧化物燃料电池(SOFCs)阳极-电解质界面中尺度凸起结构的高宽比。实验测量了用于微挤出印刷的阳极油墨在不同温度下的流变特性,发现油墨的粘度和油墨对阳极基板的润湿性在较低温度下降低,这对于油墨在基板上保持其形状是期望的。阳极支撑的SOFC纽扣电池通过微挤压印刷在有和没有温度控制的情况下制备,并在界面结构和电化学性能方面进行了比较。通过降低油墨温度,界面结构的纵横比从0.16增加到0.28,导致界面扩大25%。由于扩大了界面面积,还实现了增强的电池性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Temperature-controlled microextrusion printing for mesoscale interfacial designing in solid oxide fuel cells

A temperature-controlled microextrusion printing technique is proposed to realize the increased aspect ratio of mesoscale convex structures at the anode–electrolyte interface in solid oxide fuel cells (SOFCs). The rheological properties of the anode ink for microextrusion printing are experimentally measured at various temperatures, and it is found that the viscosity of the ink and the wettability of the ink to the anode substrate decrease at lower temperatures, which is desirable for the ink to retain its shape on the substrate. The anode-supported SOFC button cells are fabricated by microextrusion printing with and without temperature control and compared in terms of their interfacial structures and electrochemical performance. The aspect ratio of the interfacial structure is increased from 0.16 to 0.28 by lowering the ink temperature, resulting in a higher interface enlargement of 25%. Owing to the enlarged interfacial area, enhanced cell performance is also achieved.

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