The relationship between impedance and shape on the surface of a SOFC sensor

作     者：Suthawee Phaijit Montri Suklueng Sutham Niyomwas Sutida Marthosa Chainuson Kasagepongsarn Mladen Micanovic 

作者机构：Faculty of Engineering PSU Energy Systems Research Institute (PERIN) Prince of Songkla University Hat Yai Songkhla 90110 Thailand Department of Mechanical Engineering Faculty of Engineering Prince of Songkla University Hat Yai Songkhla 90110 Thailand Faculty of Science and Industrial Technology Prince of Songkla University (Surat Thani Campus) Surat Thani 84000 Thailand Renewable Energy and Environmental Research for Local Community Unit (REERC) Department of Physics Faculty of Science and Technology Surat Thani Rajabhat University 84000 Thailand Faculty of technical sciences University of Novi Sad Serbia 

出 版 物：《Materials Today: Proceedings》 

年 卷 期：2019年第17卷

页      面：1921-1930页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：Micro-SOFCs Impedance BYCF cathode Biogas Sensor 

摘      要：Solid Oxide Fuel Cells (SOFCs) are a type of power source that can convert hydrocarbons and hydrogen gas to electricity at temperatures of between 600-800°C with a flow rate of 0.2 l/min. A BYCF cathode, GDC 10 electrolyte and NiO anode were used for the SOFC system. A Spray Pyrolysis technique was used for the fabrication of the cathode and anode layers which were 5-10 µm in thickness. The Micro-SOFC should be able to detect hydrocarbon gases such as methane, butane, and so forth, which can generate a small electrical signal depending on the quantity of gas. Therefore, the novel design of Micro-SOFCs can be used as a sensor for measuring the quantity of methane. In particular, it can measure the content of methane in biogas after fermentation. This investigation used a novel design of sensor surface with Cat, Square, and Yin-Yang shapes. The impedance showed a relationship between resistivity and ionic transfers in the Micro-SOFC system depending on the surface shapes.