Development of novel Fe-doped barium calcium niobates as promising mixed conductors for solid oxide fuel cells (SOFCS)

W. H. Kan*, T. T. Trinh, T. Fürstenhaupt, V. Thangadurai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Synthesis, structural analysis, chemical stabilities and electrochemical measurements of a new Fe-doped barium calcium niobates (Fe-BCNs) family as promising mixed conductors for SOFCs are reported. The Fe-BCNs, prepared by conventional solid state method, exhibited single phases which can be indexed as Fm-3m (space group no. 225) structure with cell parameter a ∼ 8.4 Å by PXRD and SAED. The Fe-BCNs showed superior chemical stability in pure CO 2 gas at 800°C for 24 h, boiling H 2O for 72 h, 30 ppm H 2S at 600°C for 24 h and pure CH 4 gas at 600°C for 12 h, confirmed by PXRD. The highest total conductivity of 1.3 × 10 -2 Scm -1 (E a∼0.5eV) was found for Ba 2Ca 0.787Fe 0.566Nb 0.646O 6-δ at 400°C in air.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 12, SOFC XII
Pages1259-1266
Number of pages8
Edition2 PART 2
DOIs
Publication statusPublished - 2011
Event12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada
Duration: 1 May 20116 May 2011

Publication series

NameECS Transactions
Number2 PART 2
Volume35
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
Country/TerritoryCanada
CityMontreal, QC
Period1/05/116/05/11

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