Unitized Regenerative Solid Oxide Fuel Cells:Study on the key technologies

• Main Authors: Kai-Jung Hsiao, 蕭凱中
• Other Authors: Guo-Bin Jung
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/fkskb3

碩士 === 元智大學 === 機械工程學系 === 104 === Unitized Regenerative Solid Oxide Fuel Cells (URSOFCs) combine solid oxide fuel cell (SOFC) and solid oxide electrolyzer cell (SOEC) functionalities in order to create a system which can discharges electricity and store energy. When in the peak electric load, SOFCs can generate electricity and supply electric power; while, in the off-peak electric load, SOECs can store hydrogen in hydrogen storage tanks. Hydrogen is one of the most useful gas in industrial as industrial applications. Despite hydrogen’s widely used applications in industrial gas, hydrogen is one of a necessity for fuel cell based power generation stations. This study investigates the Solid Oxide Fuel Cell sintering preparations and processes’ improvement. By investigating in sintering preparations and processes, the ideal Solid Oxide Fuel Cell flatness and deformation can be achieved to reduce the difficulties in cell assemblies and increase cell aesthetics. This study tries to change the cell membranes of the anode cutting tools and side length before sintering it and get the optimum deformation when the length is 71mm. In addition, the cell heating sintering time was shortened to increase the heating rate. After changing the heating rate, it making the cell grain structure also changed. The heating rate will affect the porosity of the anode structure. And in the experiment test result shows that it improves the performance of the Solid Oxide Fuel Cell about three times. This study also designed and manufactured a fuel gas preheater that can be connect to the current button cell fixture. And use the fuel gas preheater it can improve the performance twice in SOFC mode and three times in SOEC mode.