AP19576865 — Extraction and research of MXene modified materials for electricity storage

Purpose: The aim of the project is to develop a method for producing MXene materials and their modification by embedding silicon into the resulting structure, the end result of which is a material with 2 times more charge/discharge cycle stability and specific capacity compared to graphite, used as an active electrode material in electric energy storage devices.

Relevance: The relevance of the project is due to the global growth in demand for highly efficient and durable electric energy storage devices for use in portable electronics, electric vehicles and energy storage systems. Traditional materials such as graphite are limited in capacity and stability. The use of modified MXene materials with the introduction of nanosilicon opens the way to the creation of a new generation of electrodes with improved characteristics – increased specific capacity and service life. The project meets the urgent tasks of developing "green" energy and the high-tech industry, as well as contributes to scientific and technological progress in the field of materials science.

Scientific supervisor: Doctor of Ph.D., Shakenov Kalizhan

Results obtained: The R&D work identified optimal conditions for the synthesis of the Ti₃AlC₂ MAX phase and the subsequent production of MXene materials using a top-down approach. Various etching systems, including HF/HCl/LiCl and HCl/LiF, were investigated, with the MILD method using HCl/LiF demonstrating the highest efficiency due to simultaneous etching and delamination. MXene materials were further modified using silicon and activated carbon to obtain composite structures. Optimal synthesis parameters for the composites were established, followed by electrochemical testing in half-cell and full-cell configurations. The resulting AC/MXene/Si composite exhibited high specific capacity, stable cycling performance, and significantly outperformed activated carbon. The results confirm the potential of these materials for next-generation energy storage applications.

List of publications with links to them

1. Джусамбаев М.Т., Аскарулы К., Шакенов К.Б., Азат С., Жантикеев У. Улучшение энергетической конверсии с использованием MXenes: анализ эффективности // Вестник НЯЦ РК. – 2023. – № 4. – С. 32–39. DOI: https://doi.org/10.52676/1729-7885-2023-4-32-39. URL: https://journals.nnc.kz/jour/article/view/560
2. Jussambayev M., Shakenov K., Sultakhan Sh., Zhantikeyev U., Askaruly K., Toshtay K., Azat S. MXenes for sustainable energy: A comprehensive review on conservation and storage applications // Carbon Trends. – 2025. – Vol. 19. – Art. No. 100471. DOI: https://doi.org/10.1016/j.cartre.2025.100471. URL: https://www.sciencedirect.com/science/article/pii/S2667056925000215
3. Патент на полезную модель № 10822 Республика Казахстан, МПК B22F 9/00, C01B 32/9. Способ получения MAX-фазы / Шакенов К.Б., Азат С., Султахан Ш.Т., Асқарұлы Қ.; заявитель НАО «Казахский национальный исследовательский технический университет имени К.И. Сатпаева». – № 2025/0607.2; заявл. 21.04.2025; опубл. 04.07.2025. – 5 с.
4. Shakenov K., Azat S., Askaruly K., Bektassova A., Ashimova A. Improving the efficiency of a closed-type wind turbine through an integrated approach // Wind Engineering. – 2025. DOI: https://doi.org/10.1177/0309524X251374548. URL: https://journals.sagepub.com/doi/10.1177/0309524X251374548
5. Saitova N., Askaruly K., Idrissov N., Kuli Z., Shakenov K., Azat S., Sultakhan Sh. MXene-Integrated Porous Carbon–Silicon Composite as a Stable and High-Capacity Anode for Lithium-Ion Batteries // Engineered Science. – 2024. – Art. No. 1804. DOI: https://doi.org/10.30919/es1804. URL: https://www.espublisher.com/journals/articledetails/1804