在这项研究中,直接写入3D打印方法用于使用陶瓷材料制造数字化间固体氧化物燃料电池(SOFC)。使用LSCF(La0.6Sr0.2Fe0.8Co0.22O3-δ)浆料负载和聚乙烯醇缩丁醛(PVB)粘合剂制造阴极电极。评估了具有不同LSCF浆料负载量和PVB粘合剂浓度的浆料的流变参数,以确定它们在微观结构方面对阴极痕量性能的影响。尺寸,和阻力。此外,研究了烧结后LSCF线的尺寸收缩对阴极线宽和高度的影响。此外,压力等直接写入工艺参数的影响,喷嘴和基板之间的距离,和速度上的阴极线尺寸和电阻被评估。含50%固体的LSCF浆液,12%粘合剂,和0.2%的分散剂浓度被确定为使用直接写入方法制造SOFC的最佳值。直接写入过程参数,除了粘合剂和LSCF浆料的浓度比,对阴极线的微观结构有相当大的影响。根据方差分析的结果,压力和距离对阴极电极电阻有显著影响。喷嘴和基板之间的距离增加,速度,或直接写入过程的挤压压力增加了阴极线的电阻。这些发现增加了完善SOFC制造技术的持续努力,为SOFC在能源应用中的先进性能和效率开辟了道路。
In this research, a direct-write 3D-printing method was utilized for the fabrication of inter-digitized solid oxide fuel cells (SOFCs) using ceramic materials. The cathode electrode was fabricated using the LSCF (La0.6Sr0.2Fe0.8Co0.2O3-δ) slurry loading and the Polyvinyl butyral (PVB)
binder. The rheological parameters of slurries with varying LSCF slurry loading and PVB
binder concentration were evaluated to determine their effect on the cathode trace performance in terms of microstructure, size, and resistance. Additionally, the dimensional shrinkage of LSCF lines after sintering was investigated to realize their influence on cathode line width and height. Moreover, the effect of the direct-write process parameters such as pressure, distance between the nozzle and substrate, and speed on the cathode line dimensions and resistance was evaluated. LSCF slurry with 50% solid loading, 12%
binder, and 0.2% dispersant concentration was determined to be the optimal value for the fabrication of SOFCs using the direct-write method. The direct-write process parameters, in addition to the
binder and LSCF slurry concentration ratios, had a considerable impact on the microstructure of cathode lines. Based on ANOVA findings, pressure and distance had significant effects on the cathode electrode resistance. An increase in the distance between the nozzle and substrate, speed, or extrusion pressure of the direct writing process increased the resistance of the cathode lines. These findings add to the ongoing effort to refine SOFC fabrication techniques, opening the avenues for advanced performance and efficiency of SOFCs in energy applications.