Electrochemical Gas Sensor Materials Studied by Impedance Spectroscopy Part I: Nasicon as a Solid Electrolyte
作者： P. Pasierb , S. Komornicki , R. Gajerski , S. Koziński , P. Tomczyk
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摘要: Impedance spectra of the solid electrolyte (Nasicon) were investigated by means complex impedance in frequency range 0.1 Hz–1 MHz at temperatures between 298 and 873 K. A plausible equivalent circuit consisting resistor constant phase element series was proposed. Pronounced effect electrode structure on has been observed. The for sample with Pt blocking electrodes temperature K–773 K is composed mostly CPE element, representing electrode-material interface (Warburg impedance). On other hand, Nasicon porous may be simulated formed from resistance R series. At 573 above reduced to simple Debye capacitor. determined electrical conductivity activation energy are general agreement those bulk reported literature.
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