Abstract

The world's first highly durable PFSA membrane for PEMFC have been developed, which can operate for more than 6,000 hours at 120ºC and 50% relative humidity (RH). The membrane 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 and high humidity conditions for an extended period of time.

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