BR24992873 — Development of effective MXene-based nanoconposites to invent novel generation of the electric energy storage devices
Goal of the work: The aim of the study is to synthesize nanostructured MAX-phase and MXene materials using various etching methods.
Relevance of the work: The results obtained make it possible to obtain a MAX-phase with a target phase content of more than 70% and single-layer MXene nanosheets, without defects and impurities, which is optimal for electrical energy storage devices.
Scientific supervisor: Ph.D., Professor, Azat Seitkhan
Results obtained: Within the framework of this research, nanostructured MAX phases, including Ti₃AlC₂, were synthesized with optimized temperature, pressure, and compositional parameters. It was found that at 1400°C, a pressure of 7–10 tons, and the selected molar ratio, the content of the target phase exceeds 70% with minimal impurities. Structural characterization was confirmed using X-ray diffraction and electron microscopy techniques. Various etching methods were applied to obtain MXenes, among which the minimally intensive layer delamination (MILD) method based on HCl/LiF demonstrated the highest efficiency. The resulting MXenes exhibit high delamination quality, low defect density, and a uniform layered structure. The developed approaches improve economic efficiency by reducing energy consumption and increasing product yield. The results demonstrate a high scientific and technical level and show strong potential for application in energy storage systems such as supercapacitors and batteries.
List of publications with links to them
- Askaruly K., Idrissov N., Abdisattar A., Azat S., Kuli Z., Yeleuov M., Malchik F., Daulbayev C., Yszhan Y., Sarsembayeva B., Nysanbayeva S. Utilizing rice husk-derived Si/C composites to enhance energy capacity and cycle sustainability of lithium-ion batteries // Diamond & Related Materials. – 2024. – Vol. 149. – Article 111631. – DOI: https://doi.org/10.1016/j.diamond.2024.111631. – URL: https://www.sciencedirect.com/science/article/abs/pii/S0925963524008446.