Conductivity of Composites MeWO4-Al2O3 (Me = Ca, Sr)

被引：1

作者：

Guseva, A. F. ^{[1
]}

Pestereva, N. N. ^{[1
]}

Kuznetsov, D. K. ^{[1
]}

Boyarshinova, A. A. ^{[1
]}

Gardt, V. A. ^{[1
]}

机构：

[1] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2023年 / 59卷 / 04期

关键词：

calcium tungstate; strontium tungstate; aluminum oxide; composite; heterogeneous doping; composite effect; TRANSPORT NUMBERS; METACOMPOSITES;

D O I：

10.1134/S1023193523040079

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Composites (1 - x)MeWO4-xAl(2)O(3) (Me = Ca, Sr) are synthesized by the solid-phase method. Their phase composition and thermodynamic stability are confirmed by the XRD and TG-DSC data, respectively. Their morphology is studied by the SEM-EDA method. The conductivity of composites is studied by the method of electrochemical impedance spectroscopy as a function of the temperature, the gas-phase oxygen pressure, and the content of added disperse Al2O3. It is shown that composites (1 - x)MeWO4-xAl(2)O(3) (Me = Ca, Sr) are ionic conductors and their conductivity is 4-12 times higher as compared with the corresponding tungstates.

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页码：284 / 290

页数：7

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