کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1281697 | 1497531 | 2013 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Sulfonated poly(ether ether ketone) membranes with sulfonated graphene oxide fillers for direct methanol fuel cells Sulfonated poly(ether ether ketone) membranes with sulfonated graphene oxide fillers for direct methanol fuel cells](/preview/png/1281697.png)
Sulfonated organosilane functionalized graphene oxides (SSi-GO) synthesized through the grafting of graphene oxide (GO) with 3-mercaptopropyl trimethoxysilane and subsequent oxidation have been used as a filler in sulfonated poly(ether ether ketone) (SPEEK) membranes. The incorporation of SSi-GOs greatly increases the ion-exchange capacity (IEC), water uptake, and proton conductivity of the membrane. With well-controlled contents of SSi-GOs, the composite membranes exhibit higher proton conductivity and lower methanol permeability than Nafion® 112 and Nafion® 115, making them particularly attractive as proton exchange membranes (PEMs) for direct methanol fuel cells (DMFC). The composite membrane with optimal SSi-GOs content exhibit over 38 and 17% higher power densities, respectively, than Nafion® 112 and Nafion® 115 membranes in DMFCs, offering the possibilities to reduce the DMFC membrane cost significantly while keeping high-performance.
Sulfonated graphene oxides (SSi-GOs) have been used as a filler in sulfonated poly(ether ether ketone) (SPEEK) membranes. With well-controlled contents of SSi-GOs, the composite membranes exhibit higher proton conductivity and lower methanol permeability than Nafion® 112 and Nafion® 115 membranes.Figure optionsDownload as PowerPoint slideHighlights
► Sulfonated graphene oxides have been used as a filler in SPEEK membranes.
► The properties of the composite membranes depend on the contents of SSi-GOs.
► The optimized membranes exhibit higher performance than Nafion® 112 and 115.
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 14, 10 May 2013, Pages 5875–5884