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Research Article Open access CC BY 4.0

Adsorption Energies of Lithium and Sodium Ions on Vanadium Disulphide: A DFT Study

Gloria I. Murila, George S. Manyali, Henry B. Wafula

Journal of Materials Science Research and Reviews · pp. 21–26 · Published 8 Dec 2018

10.9734/jmsrr/2019/v2i130

Abstract

Various energy sources are utilized at present with a challenge of energy storage in many cases. The existing rechargeable storage batteries which include sodium-ion and lithium-ion batteries have some limitations in their gravimetric capacities. Ab initio methods based on density functional theory (DFT) was used to investigate the adsorption of lithium ions and sodium ions on layered Vanadium disulphide. Metallic VS2 monolayer has a higher theoretical gravimetric capacity of 466mAh/g. This study showed that Sodium adsorbs on monolayer VS2 with lower adsorption energy of -2.00eV compared to Lithium (1.47eV) and it is more stable.

Li-ion/Na-ion battery adsorption energy

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Cited by 1

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