High performance of proton-conducting solid oxide fuel cell with a layered PrBaCo2O5+δ cathode

Ling Zhao, Beibei He, Lin Bin, Hanping Ding, Songlin Wang, Yihan Ling, Ranran Peng, Guangyao Meng, Xingqin Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

91 Scopus citations

Abstract

A dense BaZr0.1Ce0.7Y0.2O3-δ (BZCY) electrolyte is fabricated on a porous anode by in situ drop-coating method which can lead to extremely thin electrolyte membrane (∼10 μm in thickness). The layered perovskite structure oxide PrBaCo2O5+δ (PBCO) is synthesized by auto ignition process and initially examined as a cathode for proton-conducting IT-SOFCs. The electrical conductivity of PrBaCo2O5+δ (PBCO) reaches the general required value for the electrical conductivity of cathode absolutely. The single cell, consisting of PrBaCo2O5+δ (PBCO)/BaZr0.1Ce0.7Y0.2O3-δ (BZCY)/NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY) structure, is assembled and tested from 600 to 700 °C with humidified hydrogen (∼3% H2O) as the fuel and air as the oxidant. An open-circuit potential of 1.01 V and a maximum power density of 545 mW cm-2 at 700 °C are obtained for the single cell, and a low polarization resistance of the electrodes of 0.15 Ω cm2 is achieved at 700 °C.

Original languageEnglish (US)
Pages (from-to)835-837
Number of pages3
JournalJournal of Power Sources
Volume194
Issue number2
DOIs
StatePublished - Dec 1 2009

Keywords

  • Cathode
  • High performance
  • Proton-conducting solid oxide fuel cell

ASJC Scopus subject areas

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

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