STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF THE CATHODE ELECTROLYTE INTERFACE IN THE PLANAR SOFC/

Authors
KUZNECOV M OTSCHIK P EICHLER K SCHAFFRATH W
Citation
M. Kuznecov et al., STRUCTURE AND ELECTROCHEMICAL PROPERTIES OF THE CATHODE ELECTROLYTE INTERFACE IN THE PLANAR SOFC/, Berichte der Bunsengesellschaft fur Physikalische Chemie, 102(10), 1998, pp. 1410-1417
Citations number
17
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
ISSN journal
00059021 → ACNP
Volume
102
Issue
10
Year of publication
1998
Pages
1410 - 1417
Database
ISI
SICI code
0005-9021(1998)102:10<1410:SAEPOT>2.0.ZU;2-N
Abstract
The electrochemical behaviour of the cathode/electrolyte interface whi ch is formed between screen printed La0.8Sr0.2MNO3-cathode and ZrO2+8% Y2O3 electrolyte was investigated. The impedance of the cathode/electr olyte interface was calculated as a function of (I) the oxygen exchang e velocity between cathode material and atmosphere, (II) interface mic rostructure: and (III) the oxygen vacancies diffusion coefficient. A v ery good agreement between calculated and measured impedance spectra w as achieved. The influence of the porosity of the cathode on the imped ance is discussed.