Novel cobalt-free cathode materials BaCexFe1-xO3-δ for proton-conducting solid oxide fuel cells

Zetian Tao, Lei Bi, Zhiwen Zhu, Wei Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

A series of cobalt-free and low cost BaCexFe1-xO3-δ (x = 0.15, 0.50, 0.85) materials are successful synthesized and used as the cathode materials for proton-conducting solid oxide fuel cells (SOFCs). The single cell, consisting of a BaZr0.1Ce0.7Y0.2O3-δ (BZCY7)-NiO anode substrate, a BZCY7 anode functional layer, a BZCY7 electrolyte membrane and a BaCexFe1-xO3-δ cathode layer, is assembled and tested from 600 to 700 °C with humidified hydrogen (∼3% H2O) as the fuel and the static air as the oxidant. Within all the cathode materials above, the cathode BaCe0.5Fe0.5O3-δ shows the highest cell performance which could obtain an open-circuit potential of 0.99 V and a maximum power density of 395 mW cm-2 at 700 °C. The results indicate that the Fe-doped barium cerates can be promising cathodes for proton-conducting SOFCs.

Original languageEnglish (US)
Pages (from-to)801-804
Number of pages4
JournalJournal of Power Sources
Volume194
Issue number2
DOIs
StatePublished - Dec 1 2009

Keywords

  • Doped barium cerate
  • Functional layer
  • Perovskite structure
  • Proton conducting
  • Solid oxide fuel cells

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Novel cobalt-free cathode materials BaCe<sub>x</sub>Fe<sub>1-x</sub>O<sub>3-δ</sub> for proton-conducting solid oxide fuel cells'. Together they form a unique fingerprint.

Cite this