High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes

Kiho Bae; Sewook Lee; Dong Young Jang; Hyun Joong Kim; Hunhyeong Lee; Dongwook Shin; Ji Won Son; Joon Hyung Shim

doi:10.1021/acsami.6b00512

High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes

Kiho Bae, Sewook Lee, Dong Young Jang, Hyun Joong Kim, Hunhyeong Lee, Dongwook Shin, Ji Won Son, Joon Hyung Shim

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

In this study, we used a compositionally gradient anode functional layer (AFL) consisting of Ni-BaCe_0.5Zr_0.35Y_0.15O_3-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	https://doi.org/10.1021/acsami.6b00512
Publication status	Published - 2016 Apr 27

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)

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10.1021/acsami.6b00512

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title = "High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes",

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.",

keywords = "gradient anode functional layer, low-temperature performance, protonic ceramic fuel cells, thin-film electrolytes, yttrium-doped barium cerate-zirconate",

author = "Kiho Bae and Sewook Lee and Jang, {Dong Young} and Kim, {Hyun Joong} and Hunhyeong Lee and Dongwook Shin and Son, {Ji Won} and Shim, {Joon Hyung}",

note = "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: {\textcopyright} 2016 American Chemical Society.",

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doi = "10.1021/acsami.6b00512",

language = "English",

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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.

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.

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KW - low-temperature performance

KW - protonic ceramic fuel cells

KW - thin-film electrolytes

KW - yttrium-doped barium cerate-zirconate

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High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes

Abstract

Keywords

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