Discussion Topic Posted for the NANOTUBE-99 Workshop:

Hello everybody,
the site with this discussion topic has received very often but unfortunately there are no contributions so far. I try to stimulate the discussion.

I am working in a research group where we focus basically on metal hydrides. When I read the article in 'New Scientist' where Rodriguez and Baker claimed that very high amounts of hydrogen can be stored in nanotubes indeed I thought that nanotubes can be the 'best system for hydrogen storage'. That made us starting our work. First it was difficult to find good samples. Gas phase or electrochemical measurements need relatively large amounts of nanotubes. We are still looking for good highly purified nanotubes and everyone who would be able to provide us samles is strongly invited to contact me. A short summary of our results in Fribourg, Switzerland:

• electrochemical hydrogen storage: The capacities measured with SWNT are relatively high and comparable with Metal Hydrides. They are also in the range of the results obtaine by the group of Heben. We still try to measure MWNTs.
• gaseous hydrogen storage: We were not able to store real large amounts of hydrogen reversibly.

[1] A.C. Dillon, Nature 386: 6623 (MAR 27 1997) 377
[2] Ch. Nuetzenadel, Electrochem. and Solid State Lett. 2 (1) 30, 1999
www: http://www3.electrochem.org/letters/Jan99/lett98-07-067.html

Visit also our homepage: http://www.unifr.ch/physics/fk/

4.1. "Hydrogen Storage in Nanotubes - Report from the IWEPNM'98 Workshop"
by David Tomanek

4.2. "Modeling of hydrogen adsorption in nanotubes and nanofibers"
by J. Karl Johnson

4.3. "Hydrogen Storage in Nanotubes - Mechanism"
   by Christoph Nuetzenadel, University of Fribourg, Switzerland

4.4. "Nanotubes for Hydrogen Storage"
   by Ken Eldridge

4.5. "Hydrogen Storage for Portable Fuel Cells"
   by L. Dubal and R. Nesper

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