Electrode properties of Sr-doped LaMnO3 on yttria-stabilized zirconia .2. Electrode kinetics

被引：233

作者：

vanHeuveln, FH ^{[1
]}

Bouwmeester, HJM ^{[1
]}

机构：

[1] UNIV TWENTE, DEPT CHEM TECHNOL, LAB INORGAN MAT SCI, NL-7500 AE ENSCHEDE, NETHERLANDS

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1997年 / 144卷 / 01期

关键词：

D O I：

10.1149/1.1837375

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of six cathodes Sr0.15La0.85MnO3 (SLM) on yttria-stabilized zirconia with different morphology of the electrode/electrolyte interface were characterized by ac impedance and de polarization measurements. It is found that the electrode kinetics at elevated temperature (945 degrees C) are governed by two serial processes. An activation process can be identified to occur at high cathodic overpotential, whereas a transport process competes with charge-transfer at comparatively low overpotential. Attention is drawn to the profound change in the electrocatalytic properties of Sr0.15La0.85MnO3 upon current passage and its influence in elucidation of the interfacial kinetics.

引用

页码：134 / 140

页数：7