Effects of SWNT and metallic catalyst on hydrogen absorption/desorption performance of MgH2

Article Abstract:

A study to investigate the microstructure and absorption/desorption characteristics of composite MgH2 and 5 wt % as-prepared single-walled carbon nanotubles obtained by the mechanical grinding method was performed. It suggested that metallic particles might be responsible for the improvement of hydrogen absorption kinetics and single-walled carbon nanotubes (SWNT) for the enhancement of hydrogen absorption capacity of MgH2.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Magnesium Compounds, Carbon, Nanotechnology, Structure

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Why H atom prefers the on-top site and alkali metals favor the middle hollow site on the basal plane of graphite

Article Abstract:

The different adsorption properties of H and alkali metal atoms on the basal plane of graphite are studied and compared using density functional methods on the same model of chemistry level. The results show that H prefers the 'on-top site' while alkali metals favor the 'middle hollow site' of graphite basal plane due to the unique electronic structures of H, alkali metals, and graphite.

Usage, Alkali metals, Density functionals, Density functional theory

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Mg-based nanocomposites with high capacity and fast kinetics for hydrogen storage

Article Abstract:

Magnesium-based nanocomposites were designed and developed and effect of carbon nanotubes and transition metals on hydrogen adsorption in these materials was studied. The results showed catalytic effects on the dissociative chemisorption and diffusion of hydrogen on an Mg(0001) surface when titanium and carbon are respectively incorporated into Mg materials.

Transition metals, Nanotubes, Atomic properties

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