Patterned Silver Nanomesh Cathode for Low-Temperature Solid Oxide Fuel Cells
- Authors
- Shim, Joon Hyung; Kim, Young Beom; Park, Joong Sun; An, Jihwan; Guer, Turgut M.; Prinz, Fritz B.
- Issue Date
- Mar-2012
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.159, no.5, pp.B541 - B545
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 159
- Number
- 5
- Start Page
- B541
- End Page
- B545
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/166096
- DOI
- 10.1149/2.059205jes
- ISSN
- 0013-4651
- Abstract
- We have tested 70 nm thick patterned dense silver mesh with close-packed nano-sized holes as catalytic air cathode for low temperature solid oxide fuel cells. The perforated bulk silver nano-mesh structure was fabricated by nanosphere lithography (NSL) technique using the Langmuir-Blodgett trough, and the pore opening size was 500 similar to 600 nm. Fuel cell tests were conducted using nano-mesh silver cathodes on commercial 100 mu m-thick 8% yttria stabilized zirconia electrolytes with sputtered porous platinum anodes. The performance of the cells was measured at temperatures of 475 similar to 550 K by examining the current-voltage curves, maximum power densities, and impedance spectra using electrochemical impedance spectroscopy. We observed that nano-mesh silver cathodes outperformed both nano-mesh platinum and randomly sputtered porous silver, and exhibited improved thermal stability.
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