High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes
- Authors
- Bae, Kiho; Lee, Sewook; Jang, Dong Young; Kim, Hyun Joong; Lee, Hunhyeong; Shin, Dongwook; Son, Ji-Won; Shim, Joon Hyung
- Issue Date
- 13-4월-2016
- Publisher
- AMER CHEMICAL SOC
- Keywords
- protonic ceramic fuel cells; gradient anode functional layer; thin-film electrolytes; yttrium-doped barium cerate-zirconate; low-temperature performance
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.8, no.14, pp.9097 - 9103
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 8
- Number
- 14
- Start Page
- 9097
- End Page
- 9103
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88928
- DOI
- 10.1021/acsami.6b00512
- ISSN
- 1944-8244
- 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.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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