Large Cryogenic Storage of Hydrogen in Carbon Nanotubes at Low Pressures
Keyword(s):
AbstractWe report (6 wt %) storage of H2 at T=77 K in processed bundles of single-walled carbon nanotubes at P=2 atmospheres. The hydrogen storage isotherms are completely reversible. D2 isotherms confirm this anomalous low-pressure adsorption and further reveal the effects of quantum mechanical zero point motion. We propose that our post-synthesis treatment of the sample not only improves access for hydrogen to the central pores within individual nanotubes, but also may create a roughened tube surface with an enhanced binding energy for hydrogen. Such an enhancement is needed to understand the strong adsorption at low pressure. We obtain an experimental isosteric heat qst=125 ± 5 meV for processed SWNT materials.
2002 ◽
Vol 17
(9)
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pp. 2209-2216
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2014 ◽
Vol 50
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pp. 23-25
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Hydrophobic Coating of Multi-Walled Carbon Nanotubes by Using a HMDSO Glow Plasma under Low Pressure
2008 ◽
Vol 53
(2)
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pp. 641-645
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2005 ◽
Vol 109
(19)
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pp. 9317-9320
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2005 ◽
Vol 44
(10)
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pp. 7709-7712
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2017 ◽
Vol 25
(4)
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pp. 269-272
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