Abstract
In this study, the membrane degradation experiments were conducted under open circuit voltage condition with high purity H_2 and O_2 under dry and fully humidified conditions to investigate which side of the membrane is severely deteriorated. For this experiments, the laminated bi-layer MEA was used to delineate the division of the membrane; anode and cathode. Based on the SEM images, it is figured out that the anode side of membrane is severely deteriorated than the cathode side of membrane under both gas supplying conditions. It is also found that the membrane under dry conditions was more deteriorated than humidified conditions.
