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

Research output: Contribution to journalArticle

20 Citations (Scopus)

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 languageEnglish
Pages (from-to)9097-9103
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number14
DOIs
Publication statusPublished - 2016 Apr 27

Fingerprint

Protonic ceramic fuel cells (PCFC)
Barium zirconate
Yttrium
Electrolytes
Anodes
Thin films
Open circuit voltage
Fuel cells
Adhesion

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 journalArticle

Bae, Kiho ; Lee, Sewook ; Jang, Dong Young ; Kim, Hyun Joong ; Lee, Hunhyeong ; Shin, Dongwook ; Son, Ji Won ; Shim, Joon Hyung. / High-Performance Protonic Ceramic Fuel Cells with Thin-Film Yttrium-Doped Barium Cerate-Zirconate Electrolytes on Compositionally Gradient Anodes. In: ACS Applied Materials and Interfaces. 2016 ; Vol. 8, No. 14. pp. 9097-9103.
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AU - Jang, Dong Young

AU - Kim, Hyun Joong

AU - Lee, Hunhyeong

AU - Shin, Dongwook

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AU - Shim, Joon Hyung

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