Micro-solid oxide fuel cell using thick-film ceria
SCIE
SCOPUS
- Title
- Micro-solid oxide fuel cell using thick-film ceria
- Authors
- Joo, JH; Choi, GM
- Date Issued
- 2009-06-22
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- A fabrication method that does not use lithography or etching processes for thick-film based micro-SOFCs (Solid Oxide Fuel Cells) was described and discussed. in this study, a new type of micro-SOFC was fabricated using a free-standing thick-film electrolyte with similar to 20 mu m thickness. This structure has the advantages of both electrolyte-support and electrode-support type SOFCs. Generally, the electrolyte should be thicker than e.g., similar to 150 mu m since a thinner electrolyte easily cracks in a self-supporting mode during the fabrication procedure. Thus, a new mounting method was developed in order to use a thin-electrolyte film. Ill this study, a similar to 20 mu m-thick GDC (Gd-doped ceria) electrolyte film was successfully Mounted on a similar to 400 mu m-thick GDC ring by sintering these two pieces together. Ni-GDC and Sm0.5Sr0.5CoO3 were brush painted as ail anode and a cathode, respectively. With this new configuration, it was possible to construct ail electrolyte-supported SOFC using a thick-film ceria-based electrolyte and measure the power density. The open-circuit Voltage (OCV) of the cell in 97%H-2 + 3%H2O/air was similar to 0.87 V and the maximum power density was similar to 270 mW/cm(2) at 600 degrees C. The result shows that the high performance is achievable for the micro-SOFCs using a thick-film ceria-electrolyte operating at 600 degrees C. (C) 2009 Elsevier B.V. All rights reserved,
- Keywords
- Micro-solid oxide fuel cells; Self-supported thick film electrolyte; Ceria electrolyte; Cell performance; PERFORMANCE; FABRICATION; ELECTROLYTE; OPERATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27790
- DOI
- 10.1016/j.ssi.2009.02.006
- ISSN
- 0167-2738
- Article Type
- Article
- Citation
- SOLID STATE IONICS, vol. 180, no. 11-13, page. 839 - 842, 2009-06-22
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