Physical Properties of Electrode Materials of Rechargeable Lithium Ion Batteries via DFT Calculations

Document Type : Original Article

Authors

1 Department of Physics, Faculty of Science, Sahand University of Technology, Tabriz, P.O. Box: 513351996, Iran

2 Department of Physics, Faculty of Science, Yasouj University, Yasouj, P.O. Box: 7591874934, Iran

Abstract

We performed a density functional theory (DFT) study on Li2VO2F to assess its electronic structure. All calculations were conducted employing the plane wave pseudopotentials basis set. Electronic structure of Li2VO2F was calculated in the framework of the Hubbard U density functional theory (DFT+U) method. The geometry of the unit cell was optimized in triclinic and monoclinic phases. The effect of adding the Hubbard parameter on the band structure as well as the partial density of states were investigated and the contribution of different atoms in the total density of states was investigated separately. Hubbard parameter added the electron-electron interaction in the calculations, which has led to an increase in the bandgap value and more accurate results compared to the existing experimental results. It was observed that the monoclinic phase exhibits a smaller gap bandwidth than the triclinic phase. Also the calculated band structure indicates the presence of an indirect gap in both phases of this compound.

Keywords

Main Subjects

© 2024 The Author(s). Progress in Physics of Applied Materials published by Semnan University Press. This is an open access article under the CC-BY 4.0 license. (https://creativecommons.org/licenses/by/4.0/)

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Progress in Physics of Applied Materials
Volume 4, Issue 2
July 2024
Pages 165-169

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History

  • Receive Date: 09 July 2024
  • Revise Date: 28 August 2024
  • Accept Date: 03 September 2024

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