Study on the correlation between Solid Oxide Fuel Cell Ni-YSZ anode performance and reduction temperature

7th European Thermal-Sciences Conference

Jiao, Zhenjun^1 ; Ueno, Ai^2 ; Shikazono, Naoki^1

Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo

153-8505, Japan^1

Department of Mechanical Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo

113-8656, Japan^2

关键词: Anode microstructures;    Focused ion beam-scanning electron microscopies;    Higher reduction temperature;    Interfacial bonding;    Long-time operation;    Polarization resistances;    Reduction temperatures;    Three-dimensional reconstruction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032146/pdf
DOI  :  10.1088/1742-6596/745/3/032146

来源: IOP

【 摘 要 】

The influences of reduction temperature on the initial performance and shorttime durability of nickel-yttria-stabilized zirconia composite solid oxide fuel cell anode were investigated. Anode microstructures before and after operation were quantitatively analyzed by three-dimensional reconstruction based on focused ion beam-scanning electron microscopy technique. The anode reduced at 500oC showed the worst initial performance and stability in operation and the anode reduced at 800oC showed the smallest polarization resistance. The anode reduced at 1000oC showed the most stable performance with polarization resistance enhanced with operation. It is found that higher reduction temperature leads to dense nickel and enhances nickel-yttria-stabilized-zirconia interfacial bonding, which can inhibit nickel sintering and improve the composite anode stability in long-time operation.