Examining of additive carbon kind and particle size to MEA with self-water management on PEFC for cost reduction

抄録

We have been developing a MEA with a self-water management on PEFC since 2007 for the cost reduction and the system efficiency improvement. Although we were able to confirm that graphite rubbish functioned as water absorption/feed grain and the grain diameter and the additive rate of graphite rubbish were optimized last year, the reaction mechanism of the added graphite in the membrane was not elucidated. Therefore, this paper aims to elucidate it by changing the kind and the particle size of graphite. As a result, the carbon black powder enhanced the activation polarization by improving proton transportability.