Investigation of La9.33Si6O26 oxygen ionic conductor

• La9.33Si6O26 oxygen ionic conductor was synthesized by solid state reaction method. Its structure was determined by single-crystal X-ray diffraction analysis at room temperature. The results showed that La9.33Si6O26 oxide has the apatite structure with space group P6(3)/m. AC impedance measurements indicated that the oxides sintered in nitrogen have much higher conductivity than those sintered in air. The effects of grain boundaries on the conductivity were discussed.

Nyckelord

La9.33Si6O26

crystal structure

oxygen ionic conductor

conductivity

oxide

gd

sm

dy

nd

la8sr2si6o26

temperature

silicates

ln=la

sofc

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