Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition

Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition

Carbon nanotubes, mostly single- and double-walled, are prepared by a catalytic chemical vapor deposition method using H2−CH4 atmospheres with different CH4 contents. The maximum hydrogen storage at room temperatures and 10 MPa is 0.5 wt %. Contrary to expectations, purification of the carbon nanotu...

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Veröffentlicht in:The journal of physical chemistry. B 2004-08, Vol.108 (34), p.12718-12723
Hauptverfasser: Bacsa, Revathi, Laurent, Christophe, Morishima, Ryuta, Suzuki, Hiroshi, Le Lay, Mikako
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Materials
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container_end_page 12723
container_issue 34
container_start_page 12718
container_title The journal of physical chemistry. B
container_volume 108
creator Bacsa, Revathi
Laurent, Christophe
Morishima, Ryuta
Suzuki, Hiroshi
Le Lay, Mikako
description Carbon nanotubes, mostly single- and double-walled, are prepared by a catalytic chemical vapor deposition method using H2−CH4 atmospheres with different CH4 contents. The maximum hydrogen storage at room temperatures and 10 MPa is 0.5 wt %. Contrary to expectations, purification of the carbon nanotube specimens by oxidative acid treatments or by heating in inert gas decreases the hydrogen storage. Decreasing the residual catalyst content does not necessarily lead to an increase in ASH. Moreover, increasing the specific surface area does not necessarily increase the hydrogen storage capacity. There seems to be a correlation between the pore volume at low pore diameters (
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title Hydrogen Storage in High Surface Area Carbon Nanotubes Produced by Catalytic Chemical Vapor Deposition
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