Stable, easily sintered BaCe0.5Zr0.3y 0.16Zn0.04O3-δ electrolyte-based protonic ceramic membrane fuel cells with Ba0.5Sr0.5Zn 0.2Fe0.8O3-δ perovskite cathode

Bin Lin, Mingjun Hu, Jianjun Ma, Yinzhu Jiang, Shanwen Tao, Guangyao Meng

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Astable, easily sintered perovskite oxide BaCe0.5Zr 0.3Ya0.16Zn0.04O3-d (BCZYZn) as an electrolyte for protonic ceramic membrane fuel cells (PCMFCs) with Ba 0.5Sr0.5Zn0.2Fe0.8O 3-d (BSZF) perovskite cathode was investigated. The BCZYZn perovskite electrolyte synthesized by a modified Pechini method exhibited higher sinterability and reached 97.4% relative density at 1200°C for 5 h in air, which is about 200°C lower than that without Zn dopant. By fabricating thin membrane BCZYZn electrolyte (about 30 µm in thickness) on NiO-BCZYZn anode support, PCMFCs were assembled and tested by selecting stable BSZF perovskite cathode. An open-circuit potential of 1.00 V, a maximum power density of 236 mWcm-2, and a low polarization resistance of the electrodes of 0.17 O cm2 were achieved at 700°C. This investigation indicated that proton conducting electrolyte BCZYZn with BSZF perovskite cathode is a promising material system for the next generation solid oxide fuel cells. © 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)479-484
Number of pages6
JournalJournal of Power Sources
Volume183
Issue number2
DOIs
Publication statusPublished - 1 Sep 2008

Keywords

  • Ba 0.5 Sr 0.5 Zn 0.2 Fe 0.8 O 3-δ
  • BaCe 0.5 Zr 0.3 Y 0.16 Zn 0.04 O 3-δ
  • Pechini method
  • Solid oxide fuel cells
  • Zn dopant

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