Abstract

In this first principles study, we report the high storage capacity exhibited by (5,5) single-walled carbon nanotube functionalized with BH 3 for two different coverages. Being light weight and hydrogen rich, BH 3 is able to adsorb H 2 molecules in the vicinity of carbon nanotube. While BH 3 is chemisorbed on the carbon nanotube, H 2 are physisorbed on the (CNT+BH 3) complex. On half coverage of BH 3 molecules, single-walled carbon nanotube can adsorb 6.8 wt% of hydrogen and the wt% is increased to 11.5 for full coverage. In both cases each BH 3 can bind up to 4H 2 molecules with the binding energy in the range recommended for efficient hydrogen storage medium.

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