Chemical storage of hydrogen in few-layer graphene

Subrahmanyam, K. S. ; Kumar, Prashant ; Maitra, Urmimala ; Govindaraj, A. ; Hembram, K. P. S. S. ; Waghmare, Umesh V. ; Rao, C. N. R. (2011) Chemical storage of hydrogen in few-layer graphene PNAS, 108 (7). pp. 2674-2677. ISSN 0027-8424

Full text not available from this repository.

Official URL: http://www.pnas.org/content/108/7/2674.short

Related URL: http://dx.doi.org/10.1073/pnas.1019542108

Abstract

Birch reduction of few-layer graphene samples gives rise to hydrogenated samples containing up to 5 wt % of hydrogen. Spectroscopic studies reveal the presence of sp3 C-H bonds in the hydrogenated graphenes. They, however, decompose readily on heating to 500°C or on irradiation with UV or laser radiation releasing all the hydrogen, thereby demonstrating the possible use of few-layer graphene for chemical storage of hydrogen. First-principles calculations throw light on the mechanism of dehydrogenation that appears to involve a significant reconstruction and relaxation of the lattice.

Item Type:Article
Source:Copyright of this article belongs to National Academy of Sciences.
Keywords:Hydrogen Storage; Reversible Hydrogenation
ID Code:89908
Deposited On:02 May 2012 13:24
Last Modified:02 May 2012 13:24

Repository Staff Only: item control page