Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published December 2009 | Supplemental Material
Journal Article Open

Hydrogen Evolution on Hydrophobic Aligned Carbon Nanotube Arrays


We investigate for the first time hydrophobic carbon nanotube-based electrochemical cells as an alternative solution to hydrogen sorting. We show that the electrically conducting surface of the nanotube arrays can be used as a cathode for hydrogen generation and absorption by electrolyzing water. We support our findings with Raman and gas chromatography measurements. These results suggest that carbon nanotube forests, presenting a unique combination of hydrophobicity and conductivity, are suitable for application in fuel cells and microelectromechanical devices.

Additional Information

© 2009 American Chemical Society. Received for review July 27, 2009 and accepted October 14, 2009. Published online November 24, 2009. We acknowledge funding from the Army Research Office, Institute for Collaborative Biotechnologies (ICB) for support of this project. This work benefited from use of the Caltech Environmental Analysis Centre (EAS), GC/MS facility. We thank Dr. N. F. Dalleska for helpful discussions. Supporting Information Available: The digital movie-clip captured during experiments shows water electrolysis on the hydrophobic carbon nanotubes surface. The hydrogen evolution can be seen to be bubbling from the CNT cathode surface, and oxygen bubbles evolve at the anode. This material is available free of charge via the Internet at http://pubs.acs.org.

Attached Files

Supplemental Material - nn900878d_si_001.avi


Files (21.4 MB)
Name Size Download all
21.4 MB Download

Additional details

August 21, 2023
October 19, 2023