Anisotropic Electronic Conductivity and Battery Performance in C-axis Oriented Lanthanum Silicate Oxyapatite Prepared by Slip Casting in a Strong Magnetic Field

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  • S. SUZUKI Tohru
    Research Center for Functional Materials, National Institute for Materials Science
  • TAKAHASHI Satoshi
    Department of Chemical Science and Technology, Hosei University
  • UCHIKOSHI Tetsuo
    Research Center for Functional Materials, National Institute for Materials Science
  • ISHIGAKI Takamasa
    Department of Chemical Science and Technology, Hosei University
  • KOBAYASHI Kiyoshi
    Research Center for Functional Materials, National Institute for Materials Science

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Other Title
  • 強磁場を用いてc軸配向したランタンシリケートオキシアパタイトの電気伝導異方性と電池特性
  • キョウジジョウ オ モチイテ cジクハイコウ シタ ランタンシリケートオキシアパタイト ノ デンキ デンドウ イホウセイ ト デンチ トクセイ

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Abstract

<p>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.</p>

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