The implementation and effectiveness of the ability of Nitrogen doped Carbon Nanotube
with divacancy (4ND-CNxNT) that is decorated with Sc for Hydrogen adsorption was
evaluated with the aide of spin-unrestricted Density Functional Theory formalism. The
composite material Sc/4ND-CNxNT has an excellent quality as a media for hydrogen
storage characterized by strong binding such that each Sc can hold up to five hydrogen
molecules. Detailed structural and electronic properties were reported starting from one up
to five hydrogen molecules absorbed.