New Fabrication Techniques for Micro-Tubular Hollow Fiber Solid Oxide Fuel Cells
New Fabrication Techniques for Micro-Tubular Hollow Fiber Solid Oxide Fuel Cells
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微管中空纤维固体氧化物燃料电池的新制造技术
DOI：
10.1149/05045.0105ecst
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Droushiotis N
中科院分区：
文献类型：
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作者：
Droushiotis N
采用相转化和电泳沉积相结合的方法制备了阳极支撑的微管状（中空纤维）固体氧化物燃料电池（MT-HF-SOFC）。采用相转化法制备了钙钛矿相。240 μm厚，高度多孔60 wt.% NiO-40重量%氧化钇稳定的氧化锆（YSZ）中空纤维阳极前体。然后使用电泳沉积工艺来施加Ca。40 μm厚的颗粒状YSZ电解质层覆盖在未烧结的NiO-YSZ HF上。0.22 kV cm-1。YSZ包覆的NiO-YSZ HF在1500 ° C下烧结12小时。然后将YSZ-LSM颗粒的分散体涂在电解质层的顶部，作为在1200 ° C下烧结三小时的“分级”YSZ-LSM多孔阴极前体。通过将银线集电器缠绕在阴极周围并穿过纤维的内腔以使得能够从阳极收集电流来完成制造过程。单一MT-HF-SOFC在800、750和700 ° C下分别提供0.20、0.18和0.14 W cm-2的峰值功率密度，流量为15 cm 3 min-1 H2（97% H2-3% H2O）和30 cm 3 min-1空气。
A novel combination of phase inversion and electrophoretic deposition was used in the fabrication of anode supported micro tubular (hollow fiber) solid oxide fuel cells (MT-HF-SOFCs). The phase inversion process was used to produce ca. 240 μm thick, highly porous 60 wt.% NiO-40 wt.% yttria-stabilised zirconia (YSZ) hollow fiber anode precursors. The electrophoretic deposition process was then used to apply ca. 40 μm thick, particulate YSZ electrolyte layers onto the unsintered NiO-YSZ HFs from an ethanol suspension at an applied electric field of ca. 0.22 kV cm-1. The YSZ-coated NiO-YSZ HFs were sintered at 1500 o C for twelve hours. Dispersions of YSZ-LSM particles were then painted on top of the electrolyte layer, as ‘graded’YSZ-LSM porous cathode precursors that were sintered at 1200 o C for three hours. The fabrication process was completed by winding silver wire current collectors spirally round the cathodes and through the lumen of the fibers to enable current collection from the anodes. Single MT-HF-SOFCs delivered peak power densities of 0.20, 0.18 and 0.14 W cm-2 at 800, 750 and 700 o C, respectively, with flow rates of 15 cm 3 min-1 H2 (97% H2-3% H2O) and 30 cm 3 min-1 of air.