Enhanced electrical conductivity of doped CeO2 under millimeter-wave irradiation heating

Salmie Suhana Binti Che Abdullah, Takasi Teranisi, Hidetaka Hayashi, Akira Kishimoto

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Abstract

The electrical conductivity of promising candidates for intermediate temperature solid oxide fuel cell (IT-SOFC) electrolyte; 10–25 mol% gadolinium or samarium-doped CeO2 was measured through impedance measurement under millimeter-wave irradiation heating. Conductivity value for all samples was found to be higher when measured under millimeter-wave irradiation heating than that measured under conventional heating. Results from activation energy show that energy for cation-vacancy dissociation was largely affected by millimeter-wave irradiation, where significant reduction was observed, thus improved the conduction process. Possibility of contribution from non-thermal ponderomotive force in conduction process was discussed.

Original languageEnglish
Pages (from-to)231-237
Number of pages7
JournalMaterials and Design
Volume115
DOIs
Publication statusPublished - Feb 5 2017

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Keywords

  • Doped CeO
  • Electrical conductivity
  • Microwave energy
  • Millimeter-wave irradiation heating
  • Solid electrolytes

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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