期刊
CHEMICAL COMMUNICATIONS
卷 51, 期 83, 页码 15280-15283出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc05474e
关键词
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资金
- Swedish Research Council [621-2012-3654]
- Graphene Flagship [NECT-ICT-604391]
Using an optimized KOH activation procedure we prepared highly porous graphene scaffoldmaterials with SSA values up to 3400m(2) g(-1) and a pore volume up to 2.2 cm(3) g(-1), which are among the highest for carbon materials. Hydrogen uptake of activated graphene samples was evaluated in a broad temperature interval (77-296 K). After additional activation by hydrogen annealing the maximal excess H-2 uptake of 7.5 wt% was obtained at 77 K. A hydrogen storage value as high as 4 wt% was observed already at 193 K (120 bar H-2), a temperature of solid CO2, which can be easily maintained using common industrial refrigeration methods.
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