Anisotropic electronic conductivity and battery performance in c-axis oriented lanthanum silicate oxyapatite prepared by slip casting in a strong magnetic field

Tohru Suzuki, Satoshi Takahashi, Tetsuo Uchikoshi, Takamasa Ishigaki, Kiyoshi Kobayashi

Research output: Contribution to journalArticle

Abstract

Lanthanum silicate oxyapatite (LSO) has superior features for application of solid electrolyte in solid oxide fuel cells. Because LSO has a higher oxygen-ion conductivity compared with yttria stabilized zirconia at temperatures below 600°C. Textured LSO bulk ceramics were fabricated by using a magnetic field-assisted colloidal processing technique. The c-axis of LSO was aligned parallel to the applied magnetic field. The anisotropic electric conductivity of the textured bulk ceramics was evaluated by the complex impedance method. It was demonstrated that the conductivity was very high along the c-axis. Battery performance was higher in the textured LSO compared with the random LSO.

Original languageEnglish
Pages (from-to)121-126
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume65
Issue number2
DOIs
Publication statusPublished - 2018 Feb 1
Externally publishedYes

Keywords

  • Electric conductivity
  • Electric generation
  • Magnetic field
  • Orientation
  • Sintering

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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