Supercapacitor performance of activated carbon derived from rotten carrot in aqueous, organic and ionic liquid based electrolytes

Ahmed, Sultan; Ahmed, Ahsan; Rafat, M.

doi:10.1016/j.jscs.2018.03.002

Cited by 190 publications

(91 citation statements)

References 46 publications

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“…It can be considered that rCNSO has high surface area due to the reduction of the carbon layer and size. The area on the surface of carbon acts as active sites for the absorptiondesorption of ions [16]. Charge storage capacity in the carbon becomes doubled after the carbon layer is exfoliated.…”

Section: Cyclic Voltammetry Measurementsmentioning

confidence: 99%

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2019

IJSTT

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The application of reduced carbon anode layer and LiFePO 4 cathode was conducted in laboratory-scale battery. Both electrodes were fabricated into lithium-ion battery with LiCl electrolyte in both gel and liquid based. The carbon was prepared by using Hummer method and solvent sonification to exfoliate the carbon layer from biocarbon. The battery performance tests were carried out in potentiostat for Cyclic Voltammetry (CV) and galvanostatic measurements. The highest current of CV measurement can be obtained in the battery with reduced carbon layer anode and 20% of liquid electrolyte. It was calculated that the same battery produced the highest energy and power. Current-Voltage profile is relatively stable in CV of batteries with 40% electrolytes in both gel and liquid media. All batteries have two peaks in both anodic and cathodic. The reduction peaks show in around 0.5 and 1.5 volts. The cathodics show in around-0.5 and-1.5 volts. The best power and energy values are given by battery with rCNSO anode and 20% liquid electrolyte. Galvanostatic profiles show that the 40% electrolytes in the batteries produces a slower discharging process. It was revealed that applying anode of layer reduced biocarbon as the battery electrode caused the discharging to run faster. The highest slope value of the galvanostatic curve can be found in the battery with the electrode of oxidized starting material and 40% of gel electrolyte, while the lowest can be found in 20% gel electrolyte with the same electrode.

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Section: Cyclic Voltammetry Measurementsmentioning

confidence: 99%

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2019

IJSTT

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“…Durian shells belong to a typical biomass waste [17,18]. In general, the residue of durian shells may be burned or sent to a landfill, regardless of environmental issues [19,20].The substance contained in the durian shell is mainly composed of 50-60% cellulose and 5% starch [21]. Durian shells have been used to prepare activated carbon as electrode material in supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Durian shell-derived N, O, P-doped activated porous carbon materials and their electrochemical performance in supercapacitor

et al. 2020

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It is very important to transform biomass-derived waste into useful materials with high performance. In this report, the N, O, P multiple heteroatom-doped activated porous carbon materials with enhanced electrochemical performance are prepared using durian shell-derived hydrochar. The as-prepared activated carbon materials show a characteristic of moderate specific surface area, micropore-dominant pore structure and multiple heteroatoms doping. As electrode in supercapacitor, the as-prepared N, O, P-doped porous carbon material can deliver a specific capacity of 184 F g-1 at a current density of 0.5 A g-1 in 1 M H 2 SO 4 aqueous solution and shows excellent cycle stability with a retention rate of *88% after 10000 cycles. In addition, in the redox electrolyte of H 2 SO 4 and KI aqueous solution, N, O, P co-doped activated porous carbon can provide a capacitance of * 560 F g-1 at 2 A g-1 (corresponding to energy density of 12.4 Wh kg-1 at a power density of 318 W kg-1). This work provides a novel way to enhance the electrochemical performance of the biomass waste-derived carbon, helping to further boosting their application in energy storage field.

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“…Due to its low cost, renewable nature, ease of availability and environmental friendliness, agricultural residuals have always been the focus of researchers working in the carbon field. AC has been previously synthesized from various agricultural residues such as: walnut shells [5], bamboo [6], orange peel [7], rotten carrot [8], sugar cane bagasse [9], tea leaves [10], nut shells [11], cotton stalk [12] and coconut shells [13]. Many biomass sources, such as wood chips and nut shells, have also been used in the production of activated carbon.…”

Section: Introductionmentioning

confidence: 99%

Preparation of High Specific Surface Area Activated Carbon from Black Wolfberry Branches as an Efficient Electrode Material for Supercapacitors

Shi¹

2019

International Journal of Electrochemical Science

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Black wolfberry branches are used as raw materials, and the KOH activation method is adopted for producing activated carbons with a high specific surface area. The characterization of the material reveals that with increasing activation temperatures, the specific surface area (SSA) and interconnected microporous/mesoporous structure are augmented. The SSA of the prepared material reaches 2046.07m 2 g-1 and a high pore volume of 0.7cm 3 g-1 is obtained. Furthermore, the prepared material exhibits excellent electrical performance. As an electrode material, the specific capacitance is as high as 355.7F g-1. at a current density of 1 A g-1 , and the capacitance loss rate is 6.4% after 5000 cycles of charging and discharging at a current density of 2 A g-1. These findings indicate that the wolfberry branch is a kind of biomass material, especially suitable for the preparation of super-activated carbon.

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Supercapacitor performance of activated carbon derived from rotten carrot in aqueous, organic and ionic liquid based electrolytes

Cited by 190 publications

References 46 publications

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Durian shell-derived N, O, P-doped activated porous carbon materials and their electrochemical performance in supercapacitor

Preparation of High Specific Surface Area Activated Carbon from Black Wolfberry Branches as an Efficient Electrode Material for Supercapacitors

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