A cathode-supported solid oxide fuel cell prepared by the phase-inversion tape casting and impregnating method

阴极 材料科学 相位反转 流延 燃料电池 固体氧化物燃料电池 氧化物 化学工程 反演(地质) 铸造 复合材料 相(物质) 电解质 烧结 电极 冶金 化学 有机化学 地质学 工程类 物理化学 古生物学 构造盆地 生物化学
作者
Huilin Zhang,Ting Chen,Zuzhi Huang,Guangzhou Hu,Juan Zhou,Shaorong Wang
出处
期刊:International Journal of Hydrogen Energy [Elsevier BV]
卷期号:47 (43): 18810-18819 被引量:28
标识
DOI:10.1016/j.ijhydene.2022.04.021
摘要

Cathode-supported Solid Oxide Fuel Cells (SOFCs) have unique advantages of stability and operating life, but the commercialization process is limited by manufacturing cost and poor electrochemical performance. In this paper, a cathode-supported SOFC with 3YSZ-LSM95| porous 8YSZ| dense 8YSZ| porous 8YSZ sandwich structure was successfully fabricated by phase-inversion tape casting and co-sintering method. The cathode support demonstrated finger shaped macropore with high porosity. The long-term stability of symmetric cells with and without impregnated LSC nanoparticals was evaluated and no obvious degregadion were observed. The peak power densities of single cell reached 464, 209, 271 and 144 mW cm−2 at 850, 800, 750 and 700 °C respectively when Ni nano-particles as the anode catalyst and LSC nano-particles as the cathode catalyst, showing a significant improvement in electrochemical performance compared with non-LSC cell. Additionally, the distribution of relaxation times (DRT) method was empoyed to analysis the polarization process at high-resolution, for better understanding the mechanism of electrochemical reaction of cells. The results indicated the impregnated LSC particles can increase the triple phase-boundaries (TPBs) for fast oxygen reduction reaction and improve the electrochemical performance. However, the optimization of anode and cathode are needed in the future work.
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