Enhancing supercapacitor performance through graphene flame synthesis on nickel current collectors and active carbon material from plant biomass

Prikhodko, Nikolay; Yeleuov, Mukhtar; Abdisattar, Alisher; Askaruly, Kydyr; Taurbekov, Azamat; Tolynbekov, Aidos; Rakhymzhan, Nurgali; Daulbayev, Chingis

doi:10.1016/j.est.2023.108853

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…The EIS curves of the electrodes were fitted according to the Randle circuit (shown in the inset of Figure 8a) in EC-Lab software provided by BioLogic. The CPE is a constant phase element representing the capacitance of a double layer, and W corresponds to Warburg diffusion [36,37]. Figure 8 depicts the Nyquist and Bode plots derived from the EIS tests.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Biomass Derived High Porous Carbon via CO2 Activation for Supercapacitor Electrodes

Taurbekov,

Abdisattar,

Atamanov

et al. 2023

J. Compos. Sci.

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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 potassium hydroxide (KOH). The results show that the KOH–activated samples have remarkable specific capacities, reaching 157.8 F g−1 for RH and 152 F g−1 for WS at 1 A g−1. However, the rate capability of AC obtained via KOH decreases significantly as the scanning rate increases, retaining only 51.5% and 68% of their original capacities for RH–KOH and WS–KOH, respectively, at 20 A g–1. In contrast, CO2–activated samples show a superior rate performance with a capacity retention of 75.6% for WS and 80% for RH at the same current density. In addition, electrochemical impedance spectroscopy (EIS) analysis shows that AC obtained via CO2 has a lower charge transfer resistance compared to its KOH counterparts. CO2–activated RH and WS electrodes show Rct values of 0.1 Ω and 0.24 Ω, respectively, indicating improved ion transport kinetics and surface area utilization. These results highlight the importance of activation techniques in tailoring the electrochemical behavior of biomass–derived carbon. This study not only expands the understanding of the interaction between activation, morphology, and performance but also indicates the potential of CO2 activation as an environmentally friendly and efficient alternative. As the field of sustainable energy storage advances, this work provides valuable guidance for the development of high–performance supercapacitor electrodes with less environmental impact.

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Biomass Derived High Porous Carbon via CO2 Activation for Supercapacitor Electrodes

Taurbekov,

Abdisattar,

Atamanov

et al. 2023

J. Compos. Sci.

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“…Rapid growth in the world population has increased the demand for energy, the bulk of which is provided by fossil fuels for power generation, industrial needs, and transportation [ 1 , 2 , 3 , 4 ]. However, in addition to limited availability, the use of fossil fuels has a negative impact on the environment, creating by-products such as carbon, nitrogen, and sulfur oxides [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Study of SrTiO3/TiO2 Hybrid Perovskite Nanotubes by Electrochemical Anodization

Bissenova,

Umirzakov,

Mit

et al. 2024

Molecules

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Layers of TiO2 nanotubes formed by the anodization process represent an area of active research in the context of innovative energy conversion and storage systems. Titanium nanotubes (TNTs) have attracted attention because of their unique properties, especially their high surface-to-volume ratio, which makes them a desirable material for various technological applications. The anodization method is widely used to produce TNTs because of its simplicity and relative cheapness; the method enables precise control over the thickness of TiO2 nanotubes. Anodization can also be used to create decorative and colored coatings on titanium nanotubes. In this study, a combined structure including anodic TiO2 nanotubes and SrTiO3 particles was fabricated using chemical synthesis techniques. TiO2 nanotubes were prepared by anodizing them in ethylene glycol containing NH4F and H2O while applying a voltage of 30 volts. An anode nanotube array heat-treated at 450 °C was then placed in an autoclave filled with dilute SrTiO3 solution. Scanning electron microscopy (SEM) analysis showed that the TNTs were characterized by clear and open tube ends, with an average outer diameter of 1.01 μm and an inner diameter of 69 nm, and their length is 133 nm. The results confirm the successful formation of a structure that can be potentially applied in a variety of applications, including hydrogen production by the photocatalytic decomposition of water under sunlight.

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“…Carbon materials are used as the main material for electrodes in energy storage devices-such as electrically conducting additives, substrates for active materials, electron converters, intercalation hosts, substrates for current-carrying wires-and as agents for controlling thermal conductivity, porosity, surface area, and permeability [16]. Since carbon material is the main material for capacitor electrodes, it is clear that the final characteristics of carbon-based supercapacitors will be directly related to the physical and chemical characteristics of carbon electrodes.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Activated Carbon from Different Natural Sources for Preparation of Binder-Free Few-Walled CNTs/Activated Carbon Electrodes

Taurbekov,

Abdisattar,

Atamanov

et al. 2023

J. Compos. Sci.

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In this study, we present another approach to fabricating high-performance supercapacitor electrodes by combining activated carbon particles with carbon nanotubes (AC/CNT). We synthesized activated carbon from diverse biomass sources using a carbonization process and chemical activation with KOH. By incorporating carbon nanotubes, we significantly augmented the electrode’s surface area, resulting in exceptional ion transport and a substantial increase in specific capacitance. Our investigation reveals that the optimized composition, 85:10:5 of AC, CNT, and conductive additive, achieved outstanding specific capacitance values, notably 125.6 F g−1 at 1 mV s−1 and 118 F g−1 at 1 A g−1, along with a maximum energy density of 4 Wh kg−1. Electrochemical impedance spectroscopy (EIS) further demonstrated the superior charge transfer capabilities of these electrodes, notably at a frequency range from 100 kHz to 10 mHz. Additionally, our research highlights the influence of different biomass precursors, such as apricot kernels, walnut shells, and rice husks, on the electrochemical behavior of these electrodes. Overall, this study provides valuable insights into the development of high-performance supercapacitors, emphasizing the potential of diverse biomass sources in optimizing electrode materials.

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Enhancing supercapacitor performance through graphene flame synthesis on nickel current collectors and active carbon material from plant biomass

Cited by 10 publications

References 34 publications

Biomass Derived High Porous Carbon via CO2 Activation for Supercapacitor Electrodes

Biomass Derived High Porous Carbon via CO2 Activation for Supercapacitor Electrodes

Synthesis and Study of SrTiO3/TiO2 Hybrid Perovskite Nanotubes by Electrochemical Anodization

Investigations of Activated Carbon from Different Natural Sources for Preparation of Binder-Free Few-Walled CNTs/Activated Carbon Electrodes

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