Millicontact impedance spectroscopic analysis in stabilized zirconia and gadolinia-doped ceria

Jong Heun Lee, Doo Kang Kim, Doh Yeon Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The spatially-resolved local impedance can be measured by 'Millicontact Impedance Spectroscopy (MIS)', which involves the use of an array of sub-millimeter-scale electrodes. In stabilized zirconia and gadolinia-doped ceria electrolytes with highly resistive grain-boundaries, MIS could measure the local impedance precisely and revealed the spatially-resolved changes in the grain-interior and grain-boundary resistivity. The validity of this technique was illustrated using the examples such as the design of a new scavenger material and an analysis of the diffusion of the siliceous phase along the grain boundary.

Original languageEnglish
Pages (from-to)966-970
Number of pages5
JournalSolid State Ionics
Volume179
Issue number21-26
DOIs
Publication statusPublished - 2008 Sep 15

Keywords

  • Gadolinia-doped ceria
  • Grain-boundary conduction
  • Local impedance
  • Millicontact Impedance Spectroscopy
  • Stabilized zirconia

ASJC Scopus subject areas

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

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