| 초록 |
Two different graphene oxides (GO) such as GO and sulfonated-GO (SGO) were prepared onto which Pt nanoparticles were deposited using polyol method. Using these GOs Nafion/GOs composite membranes were prepared and applied to PEMFC under low humidifying conditions. Various graphene oxides were characterized using XRD, FT-IR and TG/DTA. Proton conductivities and water uptakes of so-obtained membranes were also measured and membrane electrolyte assemblies (MEA) were fabricated with commercial Pt/C as a catalyst with Pt-loadings of 0.2 mg/cm2 and 0.3 mg/cm2 at anode and cathode, respectively. The cell test was also conducted under various humidity conditions such as 0 %, 40 %, 60 % and 100 %. |
