A Study on Sintering of 8YSZ Powder and Co3O4 Content in SOFC Anode Material

• Main Authors: Cheng-Hsien Tsai, 蔡政憲
• Other Authors: Yuh-Ruey Wang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/kh4r43

碩士 === 國立臺北科技大學 === 材料科學與工程研究所 === 95 === Fuel cell technology is an extremely promising method for electrical power generation due to its ability to achieve very high efficiency with very low level of pollutant. The efficiency of solid oxide fuel cell using the Ni/YSZ cermet as anode material and using the hydrogen as fuel is well recognized. However, if the methane is used as fuel, it will be decomposed in reformer and produce carbon deposit on Ni catalyst. As a consequence, the efficiency of the cell decreases and the performance deteriorates. To overcome these shortcomings, the vapor/methane ratio of the mixture must be larger than three to accelerate the steam/methane reforming reaction and avoid the carbon formation. In such a way, to maintain a high humidity condition in the cell is necessary but not beneficial. Use Co as catalyst in the anode can be a good alternative to lower the carbon formation according to the previous researches. In this study, different combinations of Co oxides were prepared and tested under various sintering time and temperate to correlate their conductivities, and evaluate their potentials as becoming alternatives of anode materials for SOFC.