Material for low temperature solid oxide fuel cells: Conductivity evaluation of rutile-type Ti1-xNbxO2 as interconnect

Hideo Michibata, Koichi Itoh, Akifusa Hagiwara, Tatsuya Kawada, Junichiro Mizusaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rutile-type Ti0.93Nb0.07O2 was characterized and evaluated as a potential interconnect material for low temperature solid oxide fuel cells. It was revealed that Ti 0.93Nb0.07O2 shows the conductivity of ca. 50 S/cm in reducing atmospheres over a wide temperature range of 400 ∼ 1000 °C. Also, the effect of Cr-doping on conductivity and the segregation of niobium on grain boundaries was investigated. It was found that Cr-doping to rutile-type Ti0.93Nb0.07O2 is effective in improving the initial conductivity and reducing the rate of conductivity degradation upon aging in air.

Original languageEnglish
Pages (from-to)246-248
Number of pages3
JournalElectrochemistry
Volume79
Issue number4
DOIs
Publication statusPublished - 2011 Apr

Keywords

  • Interconnect
  • Nb-doped Ti02
  • SOFC

ASJC Scopus subject areas

  • Electrochemistry

Fingerprint Dive into the research topics of 'Material for low temperature solid oxide fuel cells: Conductivity evaluation of rutile-type Ti<sub>1-x</sub>Nb<sub>x</sub>O<sub>2</sub> as interconnect'. Together they form a unique fingerprint.

  • Cite this