کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290158 | 973320 | 2008 | 6 صفحه PDF | دانلود رایگان |
We prepared and characterized several cryogel mesoporous carbons of different pore size distribution and report the catalytic activity of PtRu supported on mesoporous carbons of pore size >15 nm in passive and in active direct methanol fuel cells (DMFCs). At room temperature (RT), the specific maximum power of the passive DMFCs with mesoporous carbon/PtRu systems as anode was in the range 3–5 W g−1. Passive DMFC assembly and RT tests limit the performance of the electrocatalytic systems and the anodes were thus tested in active DMFCs at 30, 60 and 80 °C. Their responses were also compared to those of commercial Vulcan carbon/PtRu. At 80 °C, the specific maximum power of the active DMFC with C656/PtRu was 37 W g−1 and the required amount of Pt per kW estimated at 0.4 V cell voltage was 31 g kW−1, a value less than half that of Vulcan carbon/PtRu.
Journal: Journal of Power Sources - Volume 185, Issue 2, 1 December 2008, Pages 615–620