کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
639309 | 1456190 | 2006 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Fullerene composite proton conducting membranes for polymer electrolyte fuel cells operating under low humidity conditions Fullerene composite proton conducting membranes for polymer electrolyte fuel cells operating under low humidity conditions](/preview/png/639309.png)
Fullerene composite membranes have been prepared by doping Nafion® 117 with fullerenes to fabricate proton conducting composite membranes. The fullerenes used for the composites included C60 and polyhydroxy fullerene, C60(OH)n (n ∼ 12). We report the preparation and the characterization of the composites. ac impedance measurements have indicated that the fullerene–Nafion® composite membranes have higher proton conductivities at both 20 and 80 °C than Nafion® 117, especially under low relative humidity, <50% RH. It has been found from water uptake measurements under 25% relative humidity that the fullerene–Nafion® composite held more water than Nafion® 117 under low humidity. Molecular modeling of the fullerenes support the experimental observations.
Journal: Journal of Membrane Science - Volume 281, Issues 1–2, 15 September 2006, Pages 570–580