TITLE:
Yb-Decorated Carbon Nanotubes As a Potential Capacity Hydrogen Storage Medium
AUTHORS:
Hong-Wen Lei, Hong Zhang, Wei-Dong Wu
KEYWORDS:
Hydrogen Adsorption; Carbon Nanotubes; Density of States
JOURNAL NAME:
Modeling and Numerical Simulation of Material Science,
Vol.3 No.1B,
January
21,
2013
ABSTRACT: We report a first-principles study, which demonstrates that a single Yb atom coated on a single-walled nanotube (SWNT), B atom doped CNT and N atom doped CNT binds up to six hydrogen molecules. At high Yb coverage we show that a SWNT can strongly adsorb up to 3.18 wt% hydrogen. Yb-4f electrons have no contribution on the adsorp-tion of hydrogen molecules in Yb doped CNT. The charge analysis results show that 4f electrons remain in Yb. These results promote our fundamental understanding of dissociative adsorption of hydrogen in RE atom doped carbon nano-structures.