Kydyr Askaruly

• PhD student
• Lecturer at Institute of Metallurgy and Industrial Engineering

This review explores the potential of MXenes, a novel class of two-dimensional (2D) materials, in advancing energy storage and conservation technologies. MXenes exhibit exceptional physicochemical properties, including a high specific surface area (~390 m² g⁻¹ for MXene@PPy-800), outstanding electrical conductivity, and robust chemical stability, m...

This paper presents the synthesis of a composite anode material for lithium-ion batteries consisting of graphenelike carbon obtained from coffee waste and silicon. The carbon material was synthesized by microwave carbonation and physical activation using CO₂. This method yields a porous structure with an exceptional specific surface area of 1300 m2...

The article is dedicated to the study of MXene synthesis processes and their application as electrodes for supercapacitors. MXenes are two-dimensional nanomaterials with unique electrochemical properties, such as high conductivity and large surface area. The structure and physicochemical properties of the synthesized MXenes were investigated using...

This article presents the results of a study on the production of active material for supercapacitor electrodes from graphene-like carbon obtained from tea waste, carbonization at a temperature of 550°C, followed by thermochemical activation using potassium hydroxide in a ratio of 1:4 at a temperature of 850°C in a quartz tube furnace. The structur...

One of the main problems with graphite anodes in LIBs is the limited charge/discharge rate, especially for the lithization process. In recent years, in order to solve the above-mentioned problems, more and more attention has been paid to the practical use of silicon oxide-based anode materials in LIBs, due to its large amount in the earth's crust,...

Traditional graphite anodes have a specific capacity of approximately 372 mAh/g, whereas silicon presents a promising alternative with theoretical capacities reaching up to 4200 mAh/g. However, substantial volumetric changes in silicon during lithiation lead to rapid degradation of capacitance. This study explores the utilization of rice husk, an a...

In this study, we report the synthesis of graphene-like carbon derived from onion husk, with potential application as an electrode material in energy storage devices. Graphene-like carbon (GLC) was synthesized from onion husk (OH) by preliminary carbonization at 550 °C, followed by thermochemical activation at various temperatures to determine the...

An important technological solution to the problem of plastic pollution is to replace traditional non-biodegradable polymers, which are the cause of environmental pollution, with biodegradable polymer materials with physical and mechanical properties. Searching for ways to reduce the biodegradation of self-degrading biopolymers and waste and reduci...

The article shows how the rice husk, which is the final waste of rice processing production, can be obtained from silicon dioxide of various degrees of yield, processed under different temperature conditions. As a rule, such waste is incinerated or can be simply thrown out. the smoke emitted from the incineration of such waste can negatively affect...

Maximizing energy conversion efficiency is a major goal in the field of sustainable energy systems. In recent years, MXenes, a new class of two-dimensional materials, have attracted much attention in the context of improving energy conversion efficiency. This literature review provides an overview of the current state of energy research on MXenes,...

In this study, we systematically study the efficient production method and electrochemical characteristics of activated carbons (AC) derived from rice husk (RH) and walnut shell (WS). In particular, the effectiveness of physical activation using carbon dioxide (CO2) was investigated and compared with the more common chemical activation method using...

Rice, which provides a major source of food for billions of people, covers 1% of the surface of the earth. Rice husk (RH), the outer covering of paddy rice, is an important byproduct during the milling process, and residue ash is generated after the burning of RH that is called rice husk ash (RHA), which is a primary waste material in the agricultu...

Biomass-based carbon nanofibers (CNF) were synthesized using lignin extracted from sawdust and polyacrylonitrile (PAN) (30:70) with the help of the electrospinning method and subsequent stabilization at 220 °C and carbonization at 800, 900, and 1000 °C. The synthesized CNFs were studied by scanning electron microscopy, energy-dispersive X-ray analy...

The article presents the results of comparative research on the physicochemical characteristics and catalytic activity of copper oxide supported on synthetic SiO2 and SiO2 (RH) from rice husk. SiO2 (RH) is more hydrophobic compared to SiO2, which leads to the concentration of copper oxide on its surface in the form of a “crust”, which is very impor...

Global energy and environmental issues are driving the development of modern advances in efficient and environmentally friendly energy storage systems. Such systems must meet a range of requirements, which include high energy and power density, long service life, flexibility, industrial scalability, security and reliability. Progressive achievement...

Rice husks (RHs) are the hard-protecting coverings of grains of rice. Considering the fact that this agricultural waste accumulates over the years, the need for prompt resolve for RH waste is readily apparent. As claimed by the Food and Agriculture Organization of the United Nations (FAO), the production of the global paddy rice in 2016 is consider...

The present paper aimed at the investigation of the effect of preliminary acid treatment on the structure and purity of extracted silica. In this study, the acid leaching of rice husk (RH) in 2 M hydrochloric acid solution before the calcination process at 600 • C was proposed to achieve completely white silica with high specific surface area and l...

Extraction of silica from rice husk is an emerging trend in the current research field. Large amount of rice husk (RH) are treated as waste and disposed of at the landfill site. These waste materials can also cause fire, which may lead to severe environmental pollutions. The airborne particles produced from dust may induce respiratory disease to hu...