Abstract
The hydrogen sorption capacity of arc-synthesized single-walled carbon nanotubes (SWNTs) was studied using a specially built high-pressure rig coupled to a Toepler pump capable of directly measuring the desorbed volumes of gas. The samples studied were prepared using the arc-evaporation method and were as-produced SWNT material formed at the cathode (collar), as-produced SWNTs deposited in the soot and a purified sample of SWNTs. The three samples had similar diameter ranges, the major difference between them being the concentration of remaining metal particles from the Ni/Y/C catalyst used in the arc-synthesis. The effect of the presence of these residual catalyst metal particles has been analysed and seen to strongly influence the hydrogen storage capacity of the samples.
Original language | English (US) |
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Pages (from-to) | 512-517 |
Number of pages | 6 |
Journal | Nanotechnology |
Volume | 16 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2005 |
Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- Mechanics of Materials
- Mechanical Engineering
- Bioengineering
- Electrical and Electronic Engineering
- General Materials Science