Effect of Alkali Metal Doping of Carbon nanotubes on Improvement of Hydrogen Adsorption Capacity

Hydrogen is a renewable and environmentally friendly energy sources. One of the most promising uses for hydrogen is in fuel cells for applications such as power generation and transportation. The main disadvantage of Hydrogen usage as energy carrier is its storage. Today new carbon structure materials such as carbon nanotubes are introduced for Hydrogen storage. In this work we comprise different studies of hydrogen adsorption capacity in pure and alkali-doped carbon nanotubes, and so investigate the presence of metallic impurities within single-walled nanotube bundles. This study shows that, hydrogen adsorption is strongly influenced by the structure porosity, the presence of metallic impurities in SWNTs network and doping the alkali metals on carbon nanotubes, significantly enhances the hydrogen uptake, but not to a point where this could be considered a promising storage solution.

کلیدواژه ها:

Alkali-metal dope ، ، carbon nanotube ، hydrogen storage ، impurity