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http://dx.doi.org/10.4313/JKEM.2004.17.2.236

Electrical Characterization of La2Mo2O9-based Electrolytes at High Temperature  

박상현 (서울시립대학교 신소재공학과)
유광수 (서울시립대학교 신소재공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.2, 2004 , pp. 236-241 More about this Journal
Abstract
New electrolytes of cubic L $a_2$M $o_2$-x Nbx $O_{9-}$$\delta$/(x=0, 0.05, 0.1, 0.2) were fabricated by a solid-state reaction method and their sintered densities were approximately 93％ of theoretical density. X-ray diffraction analysis and microstructure observation for the sintered specimens were performed. The at complex impedance were measured at 34$0^{\circ}C$ to 93$0^{\circ}C$ in air and fitted with a Solatron ZView program. Their impedance spectra showed big difference below and over the phase transition temperature (58$0^{\circ}C$). The electrical conductivity of L $a_2$M $o_2$ $O_{9}$ was 1.36${\times}$10$^{-2}$ S$cm^{-1}$ / at 817$^{\circ}C$. Comparing to undoped L $a_2$M $o_2$ $O_{9}$ , Nb-doped specimen showed the increase of electrical conductivity due to the aliovalent doping effect..
Keywords
$La_{2}Mo_{2}O_{9}$; Electrolytes; Electrical conductivity; Impedance spectrum;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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