| 초록 |
Membrane-electrode assembly (MEA) for fuel cell is composed of proton exchange membrane (PEM) and catalyst layers. The catalyst layers can be coated on the membrane or the gas diffusion layer using spray coating, screen printing, and rolling method. Up to now, Nafion® ionomer with equivalent weight of 1,100 has been used as a catalyst binder. When Nafion® is used as PEM, the compatibility between the Nafion® and the catalyst layer containing Nafion® ionomer guarantees high electrochemical properties even in the long term operation. However, in case of hydrocarbon-based MEA, incompatibility with Nafion® ionomer leads to delamination and thereby high contact resistance in the interface of membrane and catalyst layers in relation to rapid reduction of electrochemical performances. In this present study, a hydrocarbon-based ionomer was fabricated to solve the delamination problem and to improve electrochemical performances of the MEA. |
