Fast oxygen exchange kinetics of pore-free Bi1-xSrxFeO3-δ thin films

被引：64

作者：

Wedig, Anja ^{[1
]}

Merkle, Rotraut ^{[1
]}

Stuhlhofer, Benjamin ^{[1
]}

Habermeier, Hanns-Ulrich ^{[1
]}

Maier, Joachim ^{[1
]}

Heifets, Eugene ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 37期

关键词：

SURFACE EXCHANGE; ELECTROCHEMICAL CHARACTERIZATION; IONIC-CONDUCTIVITY; MODEL ELECTRODES; PEROVSKITE; CATHODE; SOFC; DIFFUSION; TRANSPORT; ZIRCONIA;

D O I：

10.1039/c1cp21684h

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：

The oxygen incorporation/extraction kinetics of the potential solid oxide fuel cell (SOFC) cathode material Bi1-xSrxFeO3-delta with x = 0.5 and 0.8 was studied by electrochemical impedance spectroscopy on geometrically well-defined pore-free thin film electrodes. The oxygen exchange rate was found to be higher than that of La1-xSrxFeO3-delta and-among cobalt-free perovskites-only surpassed by Ba1-xSrxFeO3-delta which is however known to be unstable in a SOFC environment.

引用

页码：16530 / 16533

页数：4

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