Fabrication and Characterization of Anode-Supported Tubular Solid-Oxide Fuel Cells by Slip Casting and Dip Coating Techniques |
| |
| Authors: | Lan Zhang Hong Quan He Wen Rui Kwek Jan Ma Ee Ho Tang San Ping Jiang |
| |
| Affiliation: | School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore;
School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore;
Defence Science and Technology Agency, Directorate of Research &Development, Singapore 11825, Singapore |
| |
| Abstract: | High-performance anode-supported tubular solid-oxide fuel cells (SOFCs) have been successfully developed and fabricated using slip casting, dip coating, and impregnation techniques. The effect of a dispersant and solid loading on the viscosity of the NiO/Y2O3–ZrO2 (NiO/YSZ) slurry is investigated in detail. The viscosity of the slurry was found to be minimum when the dispersant content was 0.6 wt% of NiO/YSZ. The effect of sintering temperature on the shrinkage and porosity of the anode tubes, densification of the electrolyte, and performance of the cell at different solid loadings is also investigated. A Ni/YSZ anode-supported tubular cell fabricated from the NiO/YSZ slurry with 65 wt% solid loading and sintered at 1380°C produced a peak power output of ～491 and ～376 mW/cm2 at 800°C in wet H2 and CH4, respectively. With the impregnation of Ce0.8Gd0.2O2 (GDC) nanoparticles, the peak power density increased to ～1104 and ～770 mW/cm2 at 800°C in wet H2 and CH4, respectively. GDC impregnation considerably enhances the electrochemical performance of the cell and significantly reduces the ohmic and polarization resistances of thin solid electrolyte cells. |
| |
| Keywords: | |
|
|
