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Pressure Isotherms of Hydrogen Adsorption in Carbon Nanostructures

Published online by Cambridge University Press:  15 March 2011

Xiaohong Chen ,
Urszula Dettlaff-Weglikowska ,
Miroslav Haluska ,
Martin Hulman ,
Siegmar Roth ,
Michael Hirscher  and
Marion Becher
Xiaohong Chen
Affiliation:
Max Planck Institute für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Urszula Dettlaff-Weglikowska
Affiliation:
Max Planck Institute für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Miroslav Haluska
Affiliation:
Max Planck Institute für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Martin Hulman
Affiliation:
Max Planck Institute für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Siegmar Roth
Affiliation:
Max Planck Institute für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Michael Hirscher
Affiliation:
Max Planck Institute für Metallforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
Marion Becher
Affiliation:
Max Planck Institute für Metallforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
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Abstract

The hydrogen adsorption capacity of various carbon nanostructures including single-wall carbon nanotubes, graphitic nanofibers, activated carbon, and graphite has been measured as a function of pressure and temperature. Our results show that at room temperature and a pressure of 80 bar the hydrogen storage capacity is less than 1 wt.% for all samples. Upon cooling, the capacity of hydrogen adsorption increases with decreasing temperature and the highest value was observed to be 2.9 wt. % at 50 bar and 77 K. The correlation between hydrogen storage capacity and specific surface area is discussed.

Type
Article
Information
MRS Online Proceedings Library (OPL) , Volume 706: Symposium Z – Making Functional Materials with Nanotubes , 2001 , Z9.11.1
Copyright
Copyright © Materials Research Society 2002

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