High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes
- Title
- High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes
- Author
- 신동욱
- Keywords
- protonic ceramic fuel cells; gradient anode functional layer; thin-film electrolytes; yttrium-doped barium cerate-zirconate; low-temperature performance
- Issue Date
- 2016-03
- Publisher
- ACS
- Citation
- ACS applied materials & interfaces, v. 8, NO 14, Page. 9097-9103
- Abstract
- In this study, we used a compositionally gradient anode functional layer (AFL) consisting of Ni-BaCe0.5Zr0.35Y0.15O3-delta (BCZY) with increasing BCZY contents toward the electrolyte -anode interface for high-performance protonic ceramic fuel cells. It is identified that conventional homogeneous AFLs fail to stably accommodate a thin film of BCZY electrolyte. In contrast, a dense 2 mu m thick BCZY electrolyte was successfully deposited onto the proposed gradient AFL with improved adhesion. A fuel cell containing this thin electrolyte showed a promising maximum peak power density of 635 mW cm(-2) at 600 degrees C, with an open-circuit voltage of over 1 V. Impedance analysis confirmed that minimizing the electrolyte thickness is essential for achieving a high power output, suggesting that the anode structure is important in stably accommodating thin electrolytes.
- URI
- http://pubs.acs.org/doi/10.1021/acsami.6b00512http://hdl.handle.net/20.500.11754/34400
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.6b00512
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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