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Fabrication and Characterization of Anode Supported Micro-tubular Solid Oxide Fuel Cells Prepared by Successive Non-aqueous Electrophoretic Deposition

Keshavarz, Mitra | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55039 (07)
  4. University: Sharif University of Technology
  5. Department: Materials Science and Engineering
  6. Advisor(s): Nemati, Ali; Paydar, Mohammad Hossein
  7. Abstract:
  8. The commercial breakthrough of micro-tubular solid oxide fuel cells (MT-SOFCs) is still facing so many challenges because of the complexity of their manufacturing process and the high cost associated with them. By deploying electrophoretic deposition as a simple and cost-effective method, the different components of the fuel cells (the anode, electrolyte, and cathode) can deposit on the graphite rod as a sacrificial substrate. The next step is eliminating the sacrificial substrate which will make hollow rods of cell components. The results of this study show that the use of a particular type of pencil lead will have a minimal negative impact on the overall fuel cell performance, leading to a significant reduction in the cost of these ceramic fuel cells at the same time. For this purpose, different pencil leads which have mm-sized diameters were investigated by X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS), and graphite with the code G2 was selected as the appropriate substrate which has the minimum amount of impurities. NiO-8YSZ was deposited on the sacrificial substrate and according to the results of thermal analysis DTA and TGA, the coated specimens were kept at temperatures of 380°C, 425°C, 480 °C, and 610°C in the furnace for 1 hour to ensure elimination of the sacrificial core without damaging the coated anode. Raising the temperature to 1350 °C sintered the coated anode and the final SEM images were successfully investigated
  9. Keywords:
  10. Solid Oxide Fuel Cell (SOFC) ; Electrophoretic ; Isopropanol ; Yittria Stabilized Zirconia (YSZ) ; Micro-Tubular Solid Oxide Fuel Cells (MT-SOFCs) ; NiO-8YSZ Composite ; Substrates Fuel Cell Components

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