The location of adsorbed hydrogen in graphite nanostructures |
| |
Authors: | Sha Xianwei Jackson Bret |
| |
Institution: | Contribution from the Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA. |
| |
Abstract: | Recent experiments suggest that the high hydrogen storage capacity in graphite nanostructures might be associated with adsorption on the edges. First-principles calculations are used to study the structure and energetics of H chemisorption on graphite zigzag edges. The properties of both singly and doubly hydrogenated edges are examined. Molecular hydrogen can dissociatively adsorb on the edge directly, with small activation barriers to the formation of either singly or doubly hydrogenated structures. A new model for the location of adsorbed H is proposed. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|