Abstract
In this study, we used a compositionally gradient anode functional layer (AFL) consisting of Ni-BaCe0.5Zr0.35Y0.15O3-δ (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 μm 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°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.
| Original language | English |
|---|---|
| Pages (from-to) | 9097-9103 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 8 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2016 Apr 27 |
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Keywords
- gradient anode functional layer
- low-temperature performance
- protonic ceramic fuel cells
- thin-film electrolytes
- yttrium-doped barium cerate-zirconate
ASJC Scopus subject areas
- Materials Science(all)
Cite this
High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes. / Bae, Kiho; Lee, Sewook; Jang, Dong Young; Kim, Hyun Joong; Lee, Hunhyeong; Shin, Dongwook; Son, Ji Won; Shim, Joon Hyung.
In: ACS Applied Materials and Interfaces, Vol. 8, No. 14, 27.04.2016, p. 9097-9103.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes
AU - Bae, Kiho
AU - Lee, Sewook
AU - Jang, Dong Young
AU - Kim, Hyun Joong
AU - Lee, Hunhyeong
AU - Shin, Dongwook
AU - Son, Ji Won
AU - Shim, Joon Hyung
PY - 2016/4/27
Y1 - 2016/4/27
N2 - In this study, we used a compositionally gradient anode functional layer (AFL) consisting of Ni-BaCe0.5Zr0.35Y0.15O3-δ (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 μm 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°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.
AB - In this study, we used a compositionally gradient anode functional layer (AFL) consisting of Ni-BaCe0.5Zr0.35Y0.15O3-δ (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 μm 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°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.
KW - gradient anode functional layer
KW - low-temperature performance
KW - protonic ceramic fuel cells
KW - thin-film electrolytes
KW - yttrium-doped barium cerate-zirconate
UR - http://www.scopus.com/inward/record.url?scp=84964882708&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84964882708&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b00512
DO - 10.1021/acsami.6b00512
M3 - Article
AN - SCOPUS:84964882708
VL - 8
SP - 9097
EP - 9103
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 14
ER -