DFT-BASED STUDY OF STRUCTURAL, ELECTRONIC AND MULTIFUNCTIONAL PROPERTIES OF METAL OXIDE NANOMATERIALS FOR ENERGY APPLICATIONS
DOI:
https://doi.org/10.71146/kjmr667Keywords:
Density Functional Theory, metal oxide nanomaterials, energy storage, energy conversion, structural properties, electronic structure, band gap, DOS, PDOS, chemical bonding, charge transfer, optical properties, dielectric response, work function, surface energy, adsorption, ion diffusion, magnetic properties, mechanical properties, phonons, defects, oxygen vacancies, catalysisAbstract
Metal oxide nanomaterials are among the most important functional materials for modern energy-storage and energy-conversion technologies. Their usefulness originates from the wide range of crystal structures, oxidation states, surface chemistries, electronic configurations, optical responses, catalytic activities and defect-dependent properties that can be achieved by changing composition and nanoscale architecture. Density Functional Theory (DFT) provides an atomistic framework for understanding these properties before or alongside experimental synthesis. A carefully designed DFT study can determine optimized structural parameters, formation and binding energies, electronic band structures, band gaps, density of states, projected density of states, charge transfer, chemical bonding, work functions, optical and dielectric functions, magnetic moments, mechanical properties, phonon stability, surface energies, adsorption energies, ion-diffusion barriers and reaction energetics. These descriptors are directly connected to battery electrodes, supercapacitors, photocatalysts, electrocatalysts, fuel cells, hydrogen production, carbon-dioxide conversion and solar-energy devices. This article presents an extended computational framework for metal oxide nanomaterials, emphasizing how each calculated property should be interpreted and how graphical outputs can be used to build a scientifically meaningful results section. Particular attention is given to oxygen vacancies, substitutional doping, strain and heterostructures because these approaches can modify charge transport, band alignment, surface reactivity and ion mobility. The graphs included in this document are explicitly illustrative schematics rather than fabricated first-principles results. For a publication or thesis, they should be replaced by plots generated from the actual DFT output of a specified material and computational setup.
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Copyright (c) 2025 Musa Khan, Tawsif Ahmad, Moneeb Ahmad, Waqar Ahmad (Author)
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