出版社：Niğde Üniversitesi Mühendislik Fakültesi Dekanlığı
摘要：Bismuth-based solid electrolytes are used as a solid electrolyte especially in oxygen pumps, oxygen gas detectors and fuel cells. In terms of conductivity, Bi-based electro-ceramics are an alternative material according to Ceria-based and Zirconia-based ones. In this study, all the processes for the synthesis of new type stabilized Bi-based doped solid electrolyte powders, shaping in thick film form and the application of single fuel cell for observation of electrical power production have been particularly explained. For this purpose, new type Bismuth-based solid electrolyte powders were synthesized by adding lanthanide group (Gd 2 O 3 ) and (Dy 2 O 3 ) oxide compounds in (Bi 2 O 3 ) at different ratios. Subsequently, physical properties were investigated by forming a thin layer via tape casting method. Microstructures of the fabricated materials were investigated by SEM, temperature and time dependent conductivity characterization was performed by impedance analysis, Activation Energies and load carrier numbers were measured. Then, single fuel cell application of the produced solid electrolyte was done. For this, both surfaces of the electrolyte were coated with electrodes by screen printing method and the power production was tested. Processes of production conditions were investigated and all of the determined parameters were explained.
其他摘要：Bismuth-based solid electrolytes are used as a solid electrolyte especially in oxygen pumps, oxygen gas detectors and fuel cells. In terms of conductivity, Bi-based electro-ceramics are an alternative material according to Ceria-based and Zirconia-based ones. In this study, all the processes for the synthesis of new type stabilized Bi-based doped solid electrolyte powders, shaping in thick film form and the application of single fuel cell for observation of electrical power production have been particularly explained. For this purpose, new type Bismuth-based solid electrolyte powders were synthesized by adding lanthanide group (Gd 2 O 3 ) and (Dy 2 O 3 ) oxide compounds in (Bi 2 O 3 ) at different ratios. Subsequently, physical properties were investigated by forming a thin layer via tape casting method. Microstructures of the fabricated materials were investigated by SEM, temperature and time dependent conductivity characterization was performed by impedance analysis, Activation Energies and load carrier numbers were measured. Then, single fuel cell application of the produced solid electrolyte was done. For this, both surfaces of the electrolyte were coated with electrodes by screen printing method and the power production was tested. Processes of production conditions were investigated and all of the determined parameters were explained. Keywords: Solid oxide fuel cell, bismuth oxide, tape casting, screen printing, electrical conductivity characterization
