کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1287397 | 973223 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of porous carbons having surface functional groups and their application to direct-methanol fuel cells Synthesis of porous carbons having surface functional groups and their application to direct-methanol fuel cells](/preview/png/1287397.png)
Pitch-based porous carbons having –SO3H groups on their surfaces were synthesized by carbonization of mesophase pitch and then sulfonation of the resulting compounds. As-synthesized carbons were characterized by BET surface area analysis, pore volume analysis and XRD. The concentration of –SO3H groups present on the carbons was measured by neutralization titration. PtRu nano-clusters were supported on the pitch-based porous carbons, and these electrocatalysts were used as anodic materials in a DMFC. Membrane–electrode assemblies prepared using these electrode materials showed an improved power density compared with a commercial 60% PtRu/Vulcan XC-72. This performance is ascribed to the higher ionic conductivity of the anode layer and the well exposed catalytic active sites.
Journal: Journal of Power Sources - Volume 158, Issue 2, 25 August 2006, Pages 1251–1255