| Abstract Scope |
Electrode degradation caused by material instability and impurity poisoning is one of the critical issues influencing the long-term stability of solid oxide fuel/electrolysis cells (SOFC/ECs). Our group are investigating electrode degradation by using our original model electrodes, so-called patterned thin film electrodes. These model electrodes simplify the complicated microstructure of a practical porous electrode [1], so that we can quantitatively define the electrochemically active area and supply gas uniformly to whole surface of the electrode. It is therefore expected that the use of these model electrodes make us easier to understand the relation between the electrode degradation and the electrode reaction. In this presentation, we will discuss the mechanism of Cr-poisoning in an SOFC oxygen electrode.
[1] K. Mizuno, K. Amezawa, et al., Solid State Ionics, 441, 117194 (2026). |
