No abstract

This work was funded by the Ministry of Economy, Trade and Industry of Japan through the SAKURA project (https://www.sakura-prj.go.jp/).

Realization of efficient fuel cell operation under high temperature and with no-humidifying condition, must be soon achieved indeed. A humidified state of MEA under high-temperature with no humidifying condition was recently investigated by a measurement technology that has been newly developed. Minute probe lines were inserted in the center portion of MEA, then the resistance of MEA over the cross-sectional direction was effectively measured during actual operation and shown as the resistance ratio. As a result, it was apparent that when the operation performance declined, it was because of the falling of performance at the H2 outlet on the anode side, caused by drying.