Ab initio investigations of the electronic structure and chemical bonding of Li2ZrN2
Langue
en
Article de revue
Ce document a été publié dans
Journal of Solid State Chemistry. 2012, vol. 190, p. 191-195
Elsevier
Résumé en anglais
The electronicstructure of the ternary nitride Li2ZrN2 is examined from abinitio with DFT computations for an assessment of the properties of chemicalbonding. The compound is found insulating with 1.8 eV band gap; it becomes ...Lire la suite >
The electronicstructure of the ternary nitride Li2ZrN2 is examined from abinitio with DFT computations for an assessment of the properties of chemicalbonding. The compound is found insulating with 1.8 eV band gap; it becomes metallic and less ionic upon removal of one equivalent of Li. The chemical interaction is found mainly between Zr and N on one hand and Li and N on the other hand. While all pair interactions are bonding, antibonding N-N interactions are found dominant at the top of the valence band of Li2ZrN2 and they become less intense upon removal of Li. From energy differences the partial delithiation leading to Li2−xZrN2 (x=∼1) is favored.< Réduire
Mots clés en anglais
Lithium
Nitrides
DFT
Crystal chemistry
Chemical bonding
Origine
Importé de halUnités de recherche