Physico-chemical characterization of activated carbon synthesized from Datura metel's peels and comparative capacitive performance analysis in acidic electrolytes and ionic liquids

Dujearic-Stephane, Kouao; Panta, Purushottam; Shulga, Yury M.; Kumar, Ashwani; Gupta, Manoj; Kumar, Yogesh

doi:10.1016/j.biteb.2020.100516

Cited by 12 publications

(11 citation statements)

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“…e ink was prepared with a 5 mg mix of carbon from each sample (OPC, AC, and FC), 5 μL Nafion solution (Sigma-Aldrich) as a binder, and 5 mL of 2-propanol (Sigma-Aldrich) [22]. e cyclic voltammetry was carried out at speeds of the potential sweep of 10, 15, 20, 25, 30, and 35 mV/s [23][24][25][26] in a window potential of −0.2 mV to 1.4 mV [27].…”

Section: Electrochemical Behaviormentioning

confidence: 99%

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Valorization of Albedo Orange Peel Waste to Develop Electrode Materials in Supercapacitors for the Electric Industry

Suárez

Ramı́rez

Castañón

et al. 2021

Journal of Chemistry

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This work proposes the use of albedo of orange peel in generation of carbon for applications in supercapacitors. For this, a comparison of compositional and electrochemical properties present in the carbons obtained of albedo, flavedo, and the complete orange peel was carried out. The morphology and composition of carbons obtained were analyzed by Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray (EDX), X-Ray Diffraction (XRD), and Fourier-transform infrared spectroscopy (FT-IR). The synthetized carbons were not subjected to the activation process by chemical compounds to relate only the properties of orange peel parts with their electrochemical behaviour. All samples were tested by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The carbon obtained of albedo presented a superior specific capacitance (210 F/g) of the rest samples. The value of albedo-based carbon capacitance is comparable with works presented in the literature that used a whole orange peel with chemical activators. In this way, it is possible to obtain large capacitances using only a part of orange peel (albedo). Thus, the importance of this study is that the albedo can be proposed as a material applied to electrodes for supercapacitors while the flavedo can be used in food industry or for oil extraction.

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Section: Electrochemical Behaviormentioning

confidence: 99%

“…e capacitance calculation through cyclic voltammetry was carried out with the following equation [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]:…”

Section: Electrochemical Behaviormentioning

confidence: 99%

Valorization of Albedo Orange Peel Waste to Develop Electrode Materials in Supercapacitors for the Electric Industry

Suárez

Ramı́rez

Castañón

et al. 2021

Journal of Chemistry

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“…[ 16,17 ] Current supercapacitors have lower energy densities (0.1–10 Wh kg −1 ) than Li‐ion batteries (10–100 Wh kg −1 ); therefore, increasing the energy density while maintaining power density of these devices is desired. [ 18 ] Electrochemical double‐layer capacitors (EDLCs) store ions on the surface and in the pores of the electrodes when a voltage is applied, creating an electrostatic charge separation. [ 18 ] Therefore, an increase in viable pores (>0.8 nm) can significantly increase specific capacitance, thus increasing energy density.…”

Section: Introductionmentioning

confidence: 99%

“…[ 18 ] Electrochemical double‐layer capacitors (EDLCs) store ions on the surface and in the pores of the electrodes when a voltage is applied, creating an electrostatic charge separation. [ 18 ] Therefore, an increase in viable pores (>0.8 nm) can significantly increase specific capacitance, thus increasing energy density. [ 18,19 ] Activation through thermochemical methods increases cleavage of functional groups within the lignocellulosic framework of biomass, which can generate desired pore structures.…”

Section: Introductionmentioning

confidence: 99%

“…[ 18 ] Therefore, an increase in viable pores (>0.8 nm) can significantly increase specific capacitance, thus increasing energy density. [ 18,19 ] Activation through thermochemical methods increases cleavage of functional groups within the lignocellulosic framework of biomass, which can generate desired pore structures. [ 20 ] Utilizing pre‐absorbed, naturally embedded Ni through phytoremediation techniques offers a low‐cost, facile, sustainable, and synergistic method of introducing catalysts that effectively enhance the physical properties conducive to energy storage applications.…”

Section: Introductionmentioning

confidence: 99%

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Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

et al. 2021

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Water hyacinth (Eichhornia crassipes, WH) is cultivated in a hydroponic system containing various concentrations of Ni2+ to demonstrate phytoremediation techniques as a facile, low‐cost, and sustainable method for synthesizing high‐performance biocarbon electrode materials. A high specific capacitance of 541 F g−1 in 2 m potassium hydroxide (KOH) is achieved for WH‐5 biocarbon with an energy density of 30.5 Wh kg−1. Materials are assembled into a coin cell supercapacitor capable of lasting 10 000 cycles with 100% capacitance retention. Surface area characterizations support these results with an SBET of 3429 m2 g−1, a VBET of 2.13 cm3 g−1, and an Sp avg of 2.5 nm, indicating enhanced pore formation and functional group cleaving. Raman spectroscopy, attenuated total reflectance Fourier transform IR (ATR‐FTIR), and X‐ray diffraction (XRD) give further insight into physical characteristics of the biocarbon that lead to improved electrochemical performance. This work describes an optimal concentration of preabsorbed Ni2+ catalyst (5 ppm in H2O) capable of achieving 98% of theoretical capacitance and value‐added environmental cleanup associated with synergistic remedial techniques.

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Experimental Investigations on Highly Conducting Solid Bio‐Polymer Electrolytes Based on Latex of Calotropis gigantea Plant

Taneja,

Bocchetta,

Kumar

et al. 2024

Macromolecular Symposia

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The study has prepared highly conducting polymer electrolyte films using solution cast technique with poly(vinylidene fluoride‐co‐hexafluoropropylene) PVDF‐HFP, mixture of ethylene carbonate (EC), and propylene carbonate (PC) as plasticizer and latex of Calotropis gigantea (CGL) as an ionic source. In this study, four films are prepared using PVDF‐HFP:CGL in ratio 1:1 with the increasing concentration of EC+PC as 1, 2, 3, and 4 M named as 1:1:1, 1:1:2, 1:1:3, 1:1:4. The prepared polymer electrolyte is examined by polarized optical microscopy (POM), elemental dispersive X‐ray technique (EDX), and complex impedance spectroscopy. EDX and POM are studied for the surface morphology of all prepared samples and to investigate the porous nature of films. The enhancement in ionic conductivity occurs due to CGL and increasing amount of EC‐PC. Conductivity of highest composition (1:1:4) polymer electrolyte film is found to be ≈10−3 S cm−1. The optimized polymer electrolyte film is considered as a promising candidate for application in supercapacitors.

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Physico-chemical characterization of activated carbon synthesized from Datura metel's peels and comparative capacitive performance analysis in acidic electrolytes and ionic liquids

Cited by 12 publications

References 50 publications

Valorization of Albedo Orange Peel Waste to Develop Electrode Materials in Supercapacitors for the Electric Industry

Valorization of Albedo Orange Peel Waste to Develop Electrode Materials in Supercapacitors for the Electric Industry

Phytoremediation of Nickel via Water Hyacinth for Biocarbon‐Derived Supercapacitor Applications

Experimental Investigations on Highly Conducting Solid Bio‐Polymer Electrolytes Based on Latex of Calotropis gigantea Plant

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