Li Jingyu, Fan Lijun, Hou Nianjun, Zhao Yicheng, Li Yongdan
State Key Laboratory of Chemical Engineering (Tianjin University), Tianjin Key Laboratory of Applied Catalysis Science and Technology, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 China.
RSC Adv. 2022 May 3;12(21):13220-13227. doi: 10.1039/d2ra02035a. eCollection 2022 Apr 28.
A thin yttria stabilized zirconia (YSZ)/gadolinia doped ceria (GDC) bi-layer membrane is fabricated through the slurry spin coating technique and used as an electrolyte of a solid oxide fuel cell with LaSrCoFeO as the cathode. The viscosity of the YSZ slurry is controlled by adding ethanol in the terpineol solvent, which shows a negligible effect on the thickness but a remarkable influence on the porosity of the YSZ film. The thickness of the YSZ layer increases with the YSZ content in the slurry. The YSZ films are pre-sintered at various temperatures, and the one sintered at 1200 °C has a moderate interaction with the GDC slurry, forming a 10 μm-thick YSZ/GDC bilayer with a low porosity and a low ohmic resistance. The corresponding single cell shows a maximum power density of 1480 mW cm at 750 °C.
通过浆料旋涂技术制备了一种薄的氧化钇稳定氧化锆(YSZ)/钆掺杂二氧化铈(GDC)双层膜,并将其用作以LaSrCoFeO为阴极的固体氧化物燃料电池的电解质。通过在萜品醇溶剂中添加乙醇来控制YSZ浆料的粘度,这对厚度的影响可忽略不计,但对YSZ膜的孔隙率有显著影响。YSZ层的厚度随浆料中YSZ含量的增加而增加。YSZ膜在不同温度下进行预烧结,在1200℃烧结的膜与GDC浆料有适度的相互作用,形成了具有低孔隙率和低欧姆电阻的10μm厚的YSZ/GDC双层膜。相应的单电池在750℃时显示出1480 mW/cm²的最大功率密度。