Conductivity and sintering property of LaNi1 - XFe xO3 ceramics prepared by Pechini method

Eiki Niwa, Chie Uematsu, Erina Miyashita, Takeshi Ohzeki, Takuya Hashimoto

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Preparation of LaNi1 - xFexO3, which is one of the candidate materials of solid oxide fuel cell cathode, current collecting layer and interconnect coating was examined with Pechini method and solid state reaction method. Single phase LaNi1 - xFe xO3 with large Ni content has successfully been prepared by low temperature sintering as 750 °C with Pechini method, whereas large amount of raw materials has remained with solid state reaction method by sintering at the same temperature. It can be ascribed to more homogenous cation distribution in raw powder material prior to sintering with Pechini method. It has also been revealed that LaNi1 - xFexO3 with x lower than 0.3 is thermodynamically unstable in air above 1000 °C. LaNi0.6Fe0.4O3 showed superior property as cathode material with high electrical conductivity, thermodynamic stability and appropriate sintering property.

Original languageEnglish
Pages (from-to)87-93
Number of pages7
JournalSolid State Ionics
Volume201
Issue number1
DOIs
Publication statusPublished - Oct 19 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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