Effect of nano-pinholes within ceramic electrolytes of thin-film solid oxide fuel cells
- Authors
- Park, T.; Lee, Y.; Cha, S.W.; Chang, I.
- Issue Date
- Jul-2019
- Publisher
- Korean Society of Industrial Engineering Chemistry
- Keywords
- Electrical short; Focused ion beam; Open-circuit voltage; Pinhole; Solid oxide fuel cell
- Citation
- Journal of Industrial and Engineering Chemistry, v.75, pp.108 - 114
- Journal Title
- Journal of Industrial and Engineering Chemistry
- Volume
- 75
- Start Page
- 108
- End Page
- 114
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/32361
- DOI
- 10.1016/j.jiec.2019.03.008
- ISSN
- 1226-086X
- Abstract
- The effect of nano-pinholes in the ceramic electrolyte (yttria-stabilized zirconia) on the performance of a thin-film solid oxide fuel cell (SOFC) is investigated. As a result, the open-circuit voltage of the thin-film SOFC was not severely affected by the existence and the size of a pinhole. However, the pinhole induced a critical electrical shortage between the anode and cathode if the cathode was deposited onto the pinhole. Thus, a nano-sized pinhole does not significantly induce fuel crossover or critically reduce the performance. It could, however, reduce the performance significantly during the common fabrication step, i.e. deposition of thin-film cathode on an electrolyte, of a thin-film SOFC, especially for larger pinholes. © 2019 The Korean Society of Industrial and Engineering Chemistry
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