Bi doped Pr6O11 as fluorite oxide cathode for all-fluorite solid oxide fuel cells

Tatsumi Ishihara, Jing Xie, Tae Ho Shin, Young Wan Ju, Shintaro Ida, John A. Kilner

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Defect fluorite, Bi-doped Pr6O11, was studied as a cathode and it was found that Bi doped Pr6O11 exhibits high surface activity for the cathode reaction, and an all-fluorite concept SOFCs is successfully demonstrated by using Ce0.6Mn0.3Fe0.1O2 for anode. Diffusivity and surface activity in Bi doped Pr6O11 was further studied with 18O2-16O2 gas phase exchange and a surface activity was competitively high with that of La0.6Sr0.4Fe0.8Co0.2O3 (LSFC), and this high surface activity is a result of the large oxygen vacancy in Pr6O11. The power generation property of the cell was also examined by using C3H8 and the power density of 0.4 W/cm2 was exhibited when dry C3H8 was directly used for a fuel because of decreased IR loss.

Original languageEnglish
Pages (from-to)167-174
Number of pages8
JournalJournal of Power Sources
Volume275
DOIs
Publication statusPublished - Feb 1 2015

All Science Journal Classification (ASJC) codes

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

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