Biomass-derived porous activated carbon from Syzygium cumini fruit shells and Chrysopogon zizanioides roots for high-energy density symmetric supercapacitors

Vinayagam, Murugan; Babu, R. Suresh; Sivasamy, A.; Barros, A. L. F. de

doi:10.1016/j.biombioe.2020.105838

Cited by 113 publications

(22 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure S1b shows the galvanostatic charge/discharge (GCD) curves of popcorn−carbon at different current densities. As shown in Figure S1b, the GCD curves of popcorn−carbon were close to two straight lines, displaying an almost symmetrical triangular shape, suggesting a typical electric double−layer capacitance behavior [23]. According to Equation (1), the specific capacitances calculated were 130 F/g, 129 F/g, 119 F/g, 111 F/g, 106 F/g, and 100 F/g at current densities of 0.5 A/g, 1 A/g, 2 A/g, 5 A/g, 10 A/g, and 20 A/g, respectively.…”

Section: Electrochemical Propertiesmentioning

confidence: 68%

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Wang

Zhang

et al. 2022

Crystals

View full text Add to dashboard Cite

In this study, a novel assisted liquid−phase plasma electrolysis was developed to realize one−step synthesis of popcorn biomass−derived porous carbon/cobalt tetroxide (popcorn−carbon/Co3O4) composites, effectively improving the structural stability and conductivity of Co3O4. The phase structure, morphologies, chemical composition, and weight ratio of the as−prepared popcorn−carbon/Co3O4 composites were systematically analyzed. The results of X−ray diffraction (XRD), Raman spectrometer, Fourier infrared spectrometer (FTIR), X−ray photoelectron spectrometer (XPS), and thermogravimetry analyzer (TG) proved the synthesis of the popcorn−carbon/Co3O4 composites. Co3O4 nanoparticles were distributed relatively uniformly on the popcorn−carbon surface. The electrochemical properties of the popcorn−carbon/Co3O4 composite electrode materials were analyzed for exploring the influence of different Co/C ratios on the electrochemical properties of composites. The results showed that the popcorn−carbon/Co3O4 composite electrode materials prepared under 200:1 mass ratio of Co(NO3)2·6H2O and popcorn−carbon possessed a specific capacitance and specific capacity of almost 1264 F/g (594 C/g) at a current density of 1 A/g, exhibiting a better electrochemical property. The efficient, fast, and novel assisted liquid−phase plasma electrolysis provides a new method for the preparation of composite electrode materials on the supercapacitors.

show abstract

Section: Electrochemical Propertiesmentioning

confidence: 68%

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Wang

Zhang

et al. 2022

Crystals

View full text Add to dashboard Cite

show abstract

“…The electrochemical test in this experiment mainly includes cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). For the three-electrode configuration, the specific capacitances were calculated from galvanostatic charge-discharge curve as follows:

where C s (F·g −1 ) is the specific capacitances of the working electrode, I (A) is the current, Δ t is the discharge time, m (g) is the weight of the active materials on the working electrode, Δ V (V) is the range of the potential [ 38 ].…”

Section: Methodsmentioning

confidence: 99%

Biomass Straw-Derived Porous Carbon Synthesized for Supercapacitor by Ball Milling

et al. 2022

View full text Add to dashboard Cite

A large amount of biomass straw waste is generated every year in the world, which can cause serious environmental pollution and resource waste if disposed of improperly. At present, biomass-derived porous carbon materials prepared from biomass waste as a carbon source have garnered attention due to their renewability, huge reserves, low cost, and environmental benevolence. In this work, high-performance carbon materials were prepared via a one-step carbonization-activation method and ball milling, with waste tobacco straw as precursor and nano-ZnO as template and activator. The specific surface area and porous structure of biomass-derived carbon could be controlled by carbonization temperature, which is closely related to the electrochemical performances of the carbon material. It was found that, when the carbonization temperature was 800 °C, the biochar possesses maximum specific surface area (1293.2 m2·g−1) and exhibits high capacitance of 220.7 F·g−1, at 1 A·g−1 current density in a three-electrode configuration with 6 M KOH aqueous solution. The capacitance retention maintained about 94.83% at 5 A·g−1 after 3000 cycles. This work proves the porous biochar derived from tobacco straws has a great potential prospect in the field of supercapacitors.

show abstract

“…[119][120][121] and supercapacitor for storage purposes. [122][123][124][125] The absorbability of activated hydrochar is influenced by carbonization temperature and RT. [126]…”

Section: Carbonizationmentioning

confidence: 99%

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Ibitoye

Jen

Mahamood

et al. 2021

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Energy is a prerequisite for any nation's industrial, social, and economic advancements. [1][2][3][4] Energy can broadly be categorized into renewable and nonrenewable energies. Nonrenewable energies are energy that cannot be replenished over a short period. Examples of such energy are coal, nuclear energy, natural gas, and crude oil. Renewable energies, in contrast, are those energies that are replenishable over a short period. This form of energy includes solar, hydro, tidal, wind, biomass energy, etc. Biomass energy is the energy generated from biomass materials. Biomass material could be woody (such as teak, mahogany), nonwoody (such as agro-residues, industrial waste), and animal materials. [5] Agroresidues are described as all organic materials that are generated as byproducts from agricultural activities. These byproducts constitute the main part of biomass feedstock's total annual production, which forms an essential and sustainable source of energy for industrial and domestic applications. [6] They are material that are of benefit to humankind, though their economic benefits are less than the cost of transformation for advantageous use. [7] Agro-residues can be divided into residues generated on the field and residues generated during the processing of agricultural products. [8] Field-based residues include but are not limited to tobacco stalks, maize stalks, sugar cane tops, rice straw, soybean straw/pods, and cocoa pods. In contrast, process-based include peanuts shell, rice husk, maize cob, bagasse, and coffee husk. Agro-residues are available in large quantities in an area with a high level of agricultural activities. [9] In developing nations, major agricultural activities are recorded in the rural areas, resulting in a larger quantity of agro-residues in these areas. [10,11] Most of the time, the farmers in developing nations' dump these residues in an open field or

show abstract

Biomass-derived porous activated carbon from Syzygium cumini fruit shells and Chrysopogon zizanioides roots for high-energy density symmetric supercapacitors

Cited by 113 publications

References 61 publications

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Biomass Straw-Derived Porous Carbon Synthesized for Supercapacitor by Ball Milling

Generation of Sustainable Energy from Agro‐Residues through Thermal Pretreatment for Developing Nations: A Review

Contact Info

Product

Resources

About