Lithium adsorption on graphite from density functional theory calculations (Articolo in rivista)

Type
Label
  • Lithium adsorption on graphite from density functional theory calculations (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Valencia, F; Romero, AH; Ancilotto, F; Silvestrelli, PL (2006)
    Lithium adsorption on graphite from density functional theory calculations
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Valencia, F; Romero, AH; Ancilotto, F; Silvestrelli, PL (literal)
Pagina inizio
  • 14832 (literal)
Pagina fine
  • 14841 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy; CINVESTAV, QUERETARO, Queretaro 76230, Qro, Mexico; DEMOCRITOS Natl Simulat Ctr, Trieste, Italy (literal)
Titolo
  • Lithium adsorption on graphite from density functional theory calculations (literal)
Abstract
  • The structural, energetic, and electronic properties of the Li/graphite system are studied through density functional theory (DFT) calculations using both the local spin density approximation (LSDA), and the gradient-corrected Perdew-Burke-Ernzerhof (PBE) approximation to the exchange-correlation energy. The calculations were performed using plane waves basis, and the electron-core interactions are described using pseudopotentials. We consider a disperse phase of the adsorbate comprising one Li atom for each 16 graphite surface cells, in a slab geometry. The close contact between the Li nucleus and the graphene plane results in a relatively large binding energy (larger than 1.1 eV). A detailed analysis of the electronic charge distribution, density difference distribution, and band structures indicates that one valence electron is entirely transferred from the atom to the surface, which gives rise to a strong interaction between the resulting lithium ion and the cloud of pi electrons in the substrate. We show that it is possible to explain the differences in the binding of Li, Na, and K adatoms on graphite considering the properties of the corresponding cation/aromatic complexes. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Insieme di parole chiave di
data.CNR.it