Enhancing thermal-stability of metal electrodes with a sputtered gadolinia-doped ceria over-layer for low-temperature solid oxide fuel cells
- Authors
- Oh, Seongkook; Hong, Soonwook; Kim, Hyong June; Kim, Young-Beom; An, Jihwan
- Issue Date
- May-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Solid oxide fuel cell; Thermal stability; Metal electrode; Oxide over-layer
- Citation
- CERAMICS INTERNATIONAL, v.43, no.7, pp.5781 - 5788
- Indexed
- SCIE
SCOPUS
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Number
- 7
- Start Page
- 5781
- End Page
- 5788
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20342
- DOI
- 10.1016/j.ceramint.2017.01.125
- ISSN
- 0272-8842
- Abstract
- Cathodic activation loss is the dominant loss mechanism in the operation of low-temperature solid oxide fuel cells (LT-SOFCs). The thermal degradation of metallic cathodes decreases the performance of LT-SOFCs, causing practical issues in long-term operation. In this paper, we investigate the effect of the sputtered gadolinia-doped ceria (GDC) over-layer on the thermal stability of platinum (Pt) cathodes. The thermal stability of Pt cathodes with 23 nm-thick GDC over-layers significantly increased compared to that of the Pt-only cathodes after 2hrs' operation at 450 °C. (< 4% vs. 17% performance degradation, respectively).
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