Post-Annealing of Thin-Film Yttria Stabilized Zirconia Electrolytes for Anode-Supported Low-Temperature Solid Oxide Fuel Cells
- Title
- Post-Annealing of Thin-Film Yttria Stabilized Zirconia Electrolytes for Anode-Supported Low-Temperature Solid Oxide Fuel Cells
- Author
- 김영범
- Keywords
- Solid Oxide Fuel Cell; Post-Annealing Process; Sputter; Ceramic Electrolyte; Yttria-Stabilized Zirconia; OXYGEN-SURFACE EXCHANGE; ATOMIC LAYER DEPOSITION; GRAIN-BOUNDARIES; HIGH-PERFORMANCE; SOFC; CRYSTALLIZATION; CONDUCTIVITY; MEMBRANES; CATHODE
- Issue Date
- 2014-09
- Publisher
- AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2014, 14(12), P.9294-9299
- Abstract
- The effects of a post-annealing treatment on the performance of low-temperature solid oxide fuel cells (LT-SOFCs) were investigated. Nickel oxide-samarium doped ceria (NiO-SDC) anodes and yttria stabilized zirconia (YSZ) electrolytes were deposited on anodized aluminum oxide (AAO) membranes by RF sputtering and DC reactive sputtering, respectively. The half-cell of YSZ/NiO-SDC was then heat-treated at 600 degrees C for 10 h, and a porous platinum (Pt) cathode was deposited on the annealed YSZ/NiO-SDC structure by DC magnetron sputtering. Electrochemical impedance spectroscopy (EIS) analysis revealed a significant decrease in the ohmic resistance and a slight increase in the cathodic impedance. Such a result may be attributed to the increased grain size and enhanced crystallinity of the YSZ electrolyte after the heat treatment. The maximum power density observed for the heat-treated cell was 35 mW/cm(2) at 450 degrees C, more than three times higher than the 10 mW/cm2 value obtained for the as-deposited cell.
- URI
- http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000012/art00076http://hdl.handle.net/20.500.11754/52594
- ISSN
- 1533-4880; 1533-4899
- DOI
- 10.1166/jnn.2014.10121
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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