| Summary: | 碩士 === 國立臺灣科技大學 === 化學工程系 === 97 === This study intends to improve the performance of anode in a single-chamber solid state oxide fuel cell (SC-SOFC) via various methods including adjusting NiO-SDC ratio, adding pore former (graphite, starch and PMMA), preparing multi-layers anode and adding noble metals (Ru, Rh, Pd) into anode. The anodes as prepared were analyzed by scanning electron microscope (SEM), AC impedance. The cell systems were tested for power density at the temperature range of 500 - 700 ℃. Methane and air were used as fuel resource.
The experimental results show that the best ratio of NiO-SDC is 6:4. When the pore former was used, the anode with graphite added possesses as higher power density. It is also noted that SC-SOFC with multi-layer anode prevails over that with single layer anode. When adding noble metal to the anode, Pd addition was found to be able to promote the cell power density, At 600℃, the maximum power density and the open circuit voltage (OCV) are 331 mW/cm2 and 0.84 V, respectively, for the anode with 3wt% Pd addition. However, adding Rh and Ru were found to reduce the cell performance. On the other hand, dropping instead of directly adding Rh in the anode exhibits higher power density. The maximum power density and OCV are 339 mW/cm2 and 0.84 V, respectively, when dropping 0.1wt% Rh on the anode surface.
|
|---|
