Conditions for H2 adsorption in the interstitials of a bundle of carbon nanotubes
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The influence of corrugation, impurities, heterogeneity of tube diameters, shape of the interchannels, and carbon vacancies in the H2 uptake by a bundle of carbon nanotubes was studied. It was found that both the existence of tubes of different chiralities and the presence of vacancies in narrow interstitials could prevent the hydrogen adsorption, making the system less useful as a reservoir in fuel cells than previously thought.