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Citation: Huang Keqin, Wang Changzhen. AC COMPLEX IMPEDANCE STUDY ON SOLID STATE ELECTROLYTE OF Bi₂O₃-Y₂O₃[J]. Chinese Journal of Applied Chemistry, ;1992, 9(2): 56-59. shu

AC COMPLEX IMPEDANCE STUDY ON SOLID STATE ELECTROLYTE OF Bi₂O₃-Y₂O₃

Huang Keqin ^, ,
Wang Changzhen

1.
Northeast University of Science aud Technology, Shengyang 110006

Corresponding author: Huang Keqin,
Received Date: 25 February 1991
Available Online: 20 August 1991

Complex impedance diagram on Bi₂O₃-Y₂O₃ system was investigated using AC impedance method. It was found that Ba₂O₃-based materials are characteristic of the Warburg impedance. The rate-limiting step of the electrode process at high PO₂ is the diffussion of oxygen atom into the solid electrolyte on the triple line. At low PO₂ the electrode process is controlled by diffusson as well as by concentration polarization, or controlled only by concentration polarization. Ba₂O₃-Y₂O₃ system characterized as a pure oxygen icn conductor at PO₂=1×1^-10~1×10⁵Pa
- Bi₂O₃-Y₂O₃,
- AC impedance,
- oxygen ion conductor,
- Warburg impedance,
- constriction resistance
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AC COMPLEX IMPEDANCE STUDY ON SOLID STATE ELECTROLYTE OF Bi2O3-Y2O3

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AC COMPLEX IMPEDANCE STUDY ON SOLID STATE ELECTROLYTE OF Bi₂O₃-Y₂O₃