OXYGEN-ION TRANSPORT AND ELECTRODE PROPERTIES OF LA(SR)MNO3

被引：46

作者：

KHARTON, VV

NIKOLAEV, AV

NAUMOVICH, EN

VECHER, AA

机构：

[1] Institute of Physico-Chemical Problems, Belarus State University, 220080 Minsk

来源：

SOLID STATE IONICS | 1995年 / 81卷 / 3-4期

关键词：

MANGANITES; OXYGEN PERMEABILITY; ELECTRODE MATERIALS; CATHODIC POLARIZATION;

D O I：

10.1016/0167-2738(95)00179-A

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cathodic polarization of LaxSryMnO3 (x = 0.3-0.6; y = 0.3-0.5) electrodes, doped by the sintering agents Bi2O3, PbO, Sb2O3, CuO, or Bi2CuO4, on a zirconia solid electrolyte has been studied. The electrochemical activity of La0.6Sr0.4MnO3 electrodes with sintering agent Bi2CuO4 was found to be the highest among the solid solutions based on La(Sr)MnO3. The positive effect of the bismuth cuprate addition is ascribed to the sufficiently high mixed ionic and electronic conductivity of Bi2CuO4. The obtained results are characterized by the absence of a direct correlation between the electrochemical parameters of the electrode layers and oxygen permeability of the manganite ceramics. It was found that oxygen transport through the manganite ceramics is limited by the sorption of on ceramics surface.

引用

页码：201 / 209

页数：9

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