Nanopores of carbon nanotubes as practical hydrogen storage media
Sang Soo Han, Hyun Seok Kim, Kyu Sung Han, Jai Young Lee, Hyuck Mo Lee, Jeung Ku Kang, Seong Ihl Woo, Adri C. T. van Duin, William A. Goddard III
Abstract
We report on hydrogen desorption mechanisms in the nanopores of multiwalled carbon nanotubes (MWCNTs). The as-grown MWCNTs show continuous walls that do not provide sites for hydrogen storage under ambient conditions. However, after treating the nanotubes with oxygen plasma to create nanopores in the MWCNTs, we observed the appearance of a new hydrogen desorption peak in the 300–350 K range. Furthermore, the calculations of density functional theory and molecular dynamics simulations confirmed that this peak could be attributed to the hydrogen that is physically adsorbed inside nanopores whose diameter is approximately 1 nm. Thus, we demonstrated that 1 nm nanopores in MWCNTs offer a promising route to hydrogen storage media for onboard practical applications.
Group Members
Han, S. S., Kim, H. S., Han, K. S., Lee, J. Y., Lee, H. M., Kang, J. K., Woo, S. I., Duin, A. C. T. v., & III, W. A. G. (2005). Nanopores of carbon nanotubes as practical hydrogen storage media. *Applied Physics Letters*, *87*(21), Art. No. 213113. https://doi.org/10.1063/1.2133928