Li+ and Li Interactions with Carbon Nanocage Structures
Molecular dynamics simulations have been carried out to explore the structural properties of Li and Li+ confined inside single-walled carbon nanotubes (SWCNTs) and fullerene molecules. C–Li, C–Li+, Li–Li and Li+–Li+ interactions have been represented by pair functions and parameterized for the corresponding interactions. C–C interactions have been modeled by Tersoff potential. Open-ended SWCNTs with various sizes and chirality, as well as fullerenes with various sizes have been considered in the simulations. C–Li interaction is stronger than that of C–Li+. Endohedral Li+ doping caused structural deformations in C60. It has been found that for both Li and Li+ cases endohedral doping is favorable with respect to exohedral doping. This result is valid for both fullerenes and nanotubes.
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Document Type: Research Article
Publication date: 2008-02-01
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