A new sol-gel precursor for preparation of La0.56Sr0.42Co0.2Fe0.8O3-delta film

作者：Promsuy S; Tangtrakarn A^*; Mongkolkachit C; Wanakitti S; Amornkitbamrung V

来源：Journal of Sol-Gel Science and Technology, 2016, 78(1): 187-194.

DOI：10.1007/s10971-015-3905-z

• LSCF
• SOFC
• Sugar
• ACAC
• Spin coating
• Sol-gel

A new sol-gel route was proposed for the fabrication of micron-thick La0.56Sr0.42Co0.2Fe0.8O3-delta (LSCF) film on a yttria-stabilized zirconia (YSZ) substrate. A sol basis made from metal nitrates, ethylene glycol and adipic acid was modified with sugar and/or acetylacetone (ACAC). The suitable combination of ACAC and sugar guaranteed the formation of continuous film as well as remarkably improved film adhesion to the YSZ substrate. The better coverage of LSCF film on the YSZ substrate was further enhanced with the tuning of a spin speed and deposition repetition. The interfacial resistances are 0.41, 0.19 and 0.10 Omega cm(2) at 700, 750 and 800 A degrees C, respectively. These results suggest that the LSCF film should perform well as an interlayer between a YSZ substrate and adjacent porous LSCF layers.

• 出版日期2016-4