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
N1 - Funding Information:
This work was supported by the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT, and Future Planning (MSIP) of the Korean Government (no. NRF-2013R1A1A1A05013794) and the BK21 plus program (21A20131712520) through the NRF funded by the Ministry of Education of Korea. The authors are also grateful to the Institutional Research Program (2E26081) of KIST and the Global Frontier R&D Program on Center for Multiscale Energy Systems (NRF-2015M3A6A7065442) funded by the NRF under the Ministry of Science, ICT, and Future Planning for financial support.
Publisher Copyright:
© 2016 American Chemical Society.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
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
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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 -