Observation of Inner Potential Distribution at Interfaces between Metal and Oxide Ion-Conductor

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  • 金属／酸化物イオン伝導体界面を観る
  • キンゾク サンカブツ イオン デンドウタイ カイメン オ ミル

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Abstract

<p>Electrostatic inner-potentials near the interfaces between Pt and oxide ion-conductor are measured by electron holography. The band bending inferred from the inner-potential distribution inside the proton conductor Strontium-Zirconium Oxide (SZO) supports the experimental result that the composite materials of Pt more than 1.5vol% in SZO show extremely low conductivity. Inner-potentials are also measured with applying external electric field to the model of fuel cell Pt/Gadolinium-doped Ceria (GDC)/Pt. In the result, an inhomogeneous distribution of Oxygen anions and ionic vacancies are detected in the condition no oxygen anions reserved. A new specimen holder has been developed so that specimen is applied external potential at high temperature.</p>

Journal

  • KENBIKYO

    KENBIKYO 45 (3), 152-155, 2010-09-30

    The Japanese Society of Microscopy

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