Development of Highly Durable PFSA Membrane and MEA for PEMFC Under High Temperature and Low Humidity Conditions

The world's first highly durable PFSA membrane and MEA for PEMFC have been developed, which can operate for more than 6,000 hours at 120ºC and 50% relative humidity (RH). The MEA is comprised of a newly invented composite polymer (NPC polymer), which has exceptional chemical stability against degradation caused by the hydroxyl radical even at 120ºC. This achievement has opened up a new era of operating PEMFC in the temperature range of near freezing to120ºC under low humidity as well as under high humidity conditions for an extended period of time.