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Pressure Isotherms of Hydrogen Adsorption in Carbon Nanostructures

  • Xiaohong Chen (a1), Urszula Dettlaff-Weglikowska (a1), Miroslav Haluska (a1), Martin Hulman (a1), Siegmar Roth (a1), Michael Hirscher (a2) and Marion Becher (a2)...

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.

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Pressure Isotherms of Hydrogen Adsorption in Carbon Nanostructures

  • Xiaohong Chen (a1), Urszula Dettlaff-Weglikowska (a1), Miroslav Haluska (a1), Martin Hulman (a1), Siegmar Roth (a1), Michael Hirscher (a2) and Marion Becher (a2)...

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