首页|ARTICLE INFO Keywords: Adsorption Hydrogen Storage DFT Nanocone Ni atom
ARTICLE INFO Keywords: Adsorption Hydrogen Storage DFT Nanocone Ni atom
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NSTL
Elsevier
Hydrogen adsorption was investigated on Ni doped carbon nanocone (Ni-CNC) 180 & DEG; by Density Functional Theory (DFT). The WB97XD method was used with the 6-31G(d,p) and LanL2DZ basis sets. The electronegativity, HOMO and LUMO energies, chemical hardness, chemical potential, adsorption enthalpy and adsorption energy values have been calculated for hydrogen adsorption on Ni-CNC structure. The adsorption enthalpy value of hydrogen molecule was calculated as-27.8 kJ/mol. According to the storage capacity study for the Ni-CNC structure, it was found that this structure adsorbed eight hydrogen molecules and the hydrogen storage capacity was calculated to be ~4.3 wt%. After hydrogen adsorption, there was no significant decrease in HOMO-LUMO gap value. In addition, this situation indicates that the electrical conductivity of the Ni-CNC structure does not increase. These results show that the Ni-CNC structure cannot be used as a sensor for the hydrogen molecule, but it is a promising candidate material for hydrogen storage at room temperature.
NSTL
Elsevier
