Studies on activated carbon derived from neem (azadirachta indica) bio-waste, and its application as supercapacitor electrode

Ahmed, Sultan; Parvaz, M.; Johari, Rahul; Rafat, M.

doi:10.1088/2053-1591/aab924

Cited by 56 publications

(19 citation statements)

References 39 publications

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“…Many factors affect the properties of the activated carbon such as raw materials, synthesis route, activating reagent, and environmental conditions during the activation process. AC is synthesized by adopting different synthesis routes and precursors which are bio-waste/naturally available such as coconut shells [21], neem [22], corn starch [23], recycled waste paper [24], scrap tires [25], and banana fiber [26]. AC is mainly synthesized through physical and chemical activation processes [19].…”

Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance

et al. 2021

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Herein, we demonstrate the fabrication of highly capacitive activated carbon (AC) using a bio-waste Kusha grass (Desmostachya bipinnata), by employing a chemical process followed by activation through KOH. The as-synthesized few-layered activated carbon has been confirmed through X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy techniques. The chemical environment of the as-prepared sample has been accessed through FTIR and UV–visible spectroscopy. The surface area and porosity of the as-synthesized material have been accessed through the Brunauer–Emmett–Teller method. All the electrochemical measurements have been performed through cyclic voltammetry and galvanometric charging/discharging (GCD) method, but primarily, we focus on GCD due to the accuracy of the technique. Moreover, the as-synthesized AC material shows a maximum specific capacitance as 218 F g−1 in the potential window ranging from − 0.35 to + 0.45 V. Also, the AC exhibits an excellent energy density of ~ 19.3 Wh kg−1 and power density of ~ 277.92 W kg−1, respectively, in the same operating potential window. It has also shown very good capacitance retention capability even after 5000th cycles. The fabricated supercapacitor shows a good energy density and power density, respectively, and good retention in capacitance at remarkably higher charging/discharging rates with excellent cycling stability. Henceforth, bio-waste Kusha grass-derived activated carbon (DP-AC) shows good promise and can be applied in supercapacitor applications due to its outstanding electrochemical properties. Herein, we envision that our results illustrate a simple and innovative approach to synthesize a bio-waste Kusha grass-derived activated carbon (DP-AC) as an emerging supercapacitor electrode material and widen its practical application in electrochemical energy storage fields.

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Section: Introductionmentioning

confidence: 99%

In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance

et al. 2021

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“…Complex compounds degrade at higher temperature ranges [28]. For example, hemicellulose decomposes to lignocellulosic components in the temperature range 250 °C to 350 °C [29]. This compound is usually completely vaporized more often.…”

Section: Resultsmentioning

confidence: 99%

Monolith solid porous carbon approach derived from Garcinia Xanthochymus for high-performance electrode material of supercapacitor

Taer

Chow

Apriwandi

2022

J. Phys.: Conf. Ser.

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Monolith solid porous carbon approach was prepared from biomass based from Garcinia Xanthochymus by using a high-temperature pyrolysis both of carbonization and physical activation in one stage integrated stage. Effect of the chemical impregnated of the activated carbon was studied. The N2 gas environment was used as inert gas of carbonization, and the CO2 gas was used as a physical activation atmosphere. The dimension of solid coin porous carbon was evaluated in the before and after high-temperature pyrolysis based on reduction of mass, diameter, and thickness. Furthermore, the porous carbon obtained also reviewed microstructure properties by using X-ray diffraction technique. Moreover, the electrode materials were evaluated their electrochemical performances at cyclic voltammetry (CV) and galvanostatic charge discharge (GCD) in different scanning rate of 1, 2, 5, and 10 mV s−1, at window voltage of 0.0-1.0V and current density of 1.0 A g−1. The optimum capacitive properties were found as high as 159 F g−1 at aqueous electrolyte of 1 M H2SO4. The energy density was reviewed of 9.91 Wh kg−1 at optimum power density of 97.17 W kg−1.

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“…a) Total pore volume versus BET surface area, b) marginal distribution plot of microporosity versus BET surface area, c) BET surface area contour map of impregnation ratio versus activation temperature, and d) microporosity contour map of impregnation ratio versus activation temperature based on biomass‐derived AC with ZnCl 2 activation. [ 30–74 ] …”

Section: Structural Features Of Ac With Chemical and Physical Activationmentioning

confidence: 99%

Advanced Material‐Oriented Biomass Precise Reconstruction: A Review on Porous Carbon with Inherited Natural Structure and Created Artificial Structure by Post‐Treatment

Jiang

Liu

Xiong

et al. 2022

Macromolecular Bioscience

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Manufacturing of porous carbon with biomass resources is intensively investigated in recent decades. The diversity of biomass species and great variety of processing methods enable the structural richness of porous carbon as well as their wide applications. This review specifically focuses on the structure of biomass-derived porous carbon either inherited from natural biomass or created by post-treatment. The intrinsic structure of plant biomass is briefly introduced and the utilization of the unique structures at different length-scales is discussed. In term of post-treatment, the structural features of activated carbon by traditional physical and chemical activation are summarized and compared in a wide spectrum of biomass species, statistical analysis is performed to evaluate the effectiveness of different activation methods in creating specific pore structures. The similar pore structure of biomass-derived carbon and coal-derived carbon suggests a promising replacement with more sustainable biomass resources in producing porous carbon. In summary, using biomass as porous carbon precursor endows the flexibility of using its naturally patterned microstructure and the tunability of controlled pore-creation by post-treatment.

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Studies on activated carbon derived from neem (azadirachta indica) bio-waste, and its application as supercapacitor electrode

Cited by 56 publications

References 39 publications

In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance

In Situ Fabrication of Activated Carbon from a Bio-Waste Desmostachya bipinnata for the Improved Supercapacitor Performance

Monolith solid porous carbon approach derived from Garcinia Xanthochymus for high-performance electrode material of supercapacitor

Advanced Material‐Oriented Biomass Precise Reconstruction: A Review on Porous Carbon with Inherited Natural Structure and Created Artificial Structure by Post‐Treatment

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