Microstructure, cathodic polarization, and ohmic losses of cathodes for SOFCs operating around 800 °C are studied. The importance of the electrode microstructure on electrochemical properties is demonstrated using the La0.85Sr0.15MnO3 cathode material on the ZrO2-8mol%Y2O3 electrolytes. It is revealed that the reduction of the current constriction is the key for optimizing electrochemical performance on microscopic level near the three phase boundaries as well as on macroscopic level around contacts with current collectors.
|Number of pages||4|
|Journal||Key Engineering Materials|
|Publication status||Published - 1999|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Chemical Engineering (miscellaneous)