Storage of hydrogen in single-walled carbon nanotubes

A. C. Dillon, K. M. Jones, T. A. Bekkedahl, C. H. Kiang, D. S. Bethune and M. J. Heben
Additional contact information
A. C. Dillon: National Renewable Energy Laboratory
K. M. Jones: National Renewable Energy Laboratory
T. A. Bekkedahl: National Renewable Energy Laboratory
C. H. Kiang: Almaden Research Center
D. S. Bethune: Almaden Research Center
M. J. Heben: National Renewable Energy Laboratory

Nature, 1997, vol. 386, issue 6623, 377-379

Abstract: Abstract Pores of molecular dimensions can adsorb large quantities of gases owing to the enhanced density of the adsorbed material inside the pores1, a consequence of the attractive potential of the pore walls. Pederson and Broughton have suggested2 that carbon nanotubes, which have diameters of typically a few nanometres, should be able to draw up liquids by capillarity, and this effect has been seen for low-surface-tension liquids in large-diameter, multi-walled nanotubes3. Here we show that a gas can condense to high density inside narrow, single-walled nanotubes (SWNTs). Temperature-programmed desorption spectrosocopy shows that hydrogen will condense inside SWNTs under conditions that do not induce adsorption within a standard mesoporous activated carbon. The very high hydrogen uptake in these materials suggests that they might be effective as a hydrogen-storage material for fuel-cell electric vehicles.

Date: 1997
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DOI: 10.1038/386377a0

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