Three-Dimensional Nanostructured Bilayer Solid Oxide Fuel Cell with 1.3 W/cm(2) at 450 degrees C
- Title
- Three-Dimensional Nanostructured Bilayer Solid Oxide Fuel Cell with 1.3 W/cm(2) at 450 degrees C
- Other Titles
- cm(2) at 450 degrees C
- Author
- 김영범
- Keywords
- Solid oxide fuel cells; micro solid oxide fuel cells; low temperature solid oxide fuel cells; doped-ceria interlayer; atomic layer deposition; nanosphere lithography
- Issue Date
- 2013-09
- Publisher
- American Chemical Society
- Citation
- NANO LETTERS, 2013, 13(9), p.4551-4555
- Abstract
- Obtaining high power density at low operating temperatures has been an ongoing challenge in solid oxide fuel cells (SOFC), which are efficient engines to generate electrical energy from fuels. Here we report successful demonstration of a thin-film three-dimensional (3-D) SOFC architecture achieving a peak power density of 1.3 W/cm(2) obtained at 450 degrees C. This is made possible by nanostructuring of the ultrathin (60 nm) electrolyte interposed with a nanogranular catalytic interlayer at the cathode/electrolyte interface. We attribute the superior cell performance to significant reduction in both the ohmic and the polarization losses due to the combined effects of employing an ultrathin film electrolyte, enhancement of effective area by 3-D architecture, and superior catalytic activity by the ceria-based interlayer at the cathode. These insights will help design high-efficiency SOFCs that operate at low temperatures with power densities that are of practical significance.
- URI
- https://pubs.acs.org/doi/10.1021/nl402661phttp://hdl.handle.net/20.500.11754/50430
- ISSN
- 1530-6984
- DOI
- 10.1021/nl402661p
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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