Carbon-Based Electrode Materials for Supercapacitor: Progress, Challenges and Prospective Solutions

Jian, Xian; Liu, Shiyu; Gao, Yuqi; Tian, Wei; Jiang, Zhenzhen; Xiao, Xiangyun; Tang, Hui; Yin, Liangjun

doi:10.17265/2328-2223/2016.02.004

Cited by 19 publications

(8 citation statements)

References 40 publications

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“…The results showed that there had been an increase in the peak in this range, although it did not show a high peak. This happens because the carbonization temperature is low so that the desired peak cannot be formed when the sample is activated and carbonized 30 .…”

Section: Electrical Conductivity Analysismentioning

confidence: 99%

Effect of Electrolyte Concentration on Characteristics of Activated Carbon of Cocoa Peel

Yetri,

Afza,

Julsam

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Cocoa peel activated carbon has been successfully synthesized with 0.3 M KOH activator and NaCl electrolyte as the base material for supercapacitor electrodes. Variations in the concentration of NaCl electrolyte used were 1 M, 2 M, and 3 M to determine their effect on the capacitance, conductivity, and pore area values produced. The activated carbon produced was characterized by Scanning Electronic Microscope (SEM) to see surface morphology, X-Ray Diffraction (XRD) to determine carbon crystals, Cyclic Voltammetry (CV) and LCR-Meter to determine capacitance and conductivity values, and the Brunauer Emmett Teller method. (BET) to measure its surface area. The results of the Indonesian National Standard (SNI) test results obtained water content (8.6%), ash content (8.7%), volatile matter (26.2%), carbon content (65.1%), and iodine absorption (800 mg/g). The pore surface area can be increased by activation up to 24,742 m2/g. XRD analysis shows that the atomic structure is amorphous. Surface morphology proves that the increase in NaCl electrolyte concentration affects the pore structure. The higher the electrolyte concentration, the more even and finer the pore structure will be. The highest specific capacitance value was obtained at 3 M NaCl, which was 1.68375 F/g and the lowest was at 0.10771 F/g NaCl 1 M. The conductivity obtained is 1.83 S/m at 3 M NaCl at frequency of 1000 Hz and the lowest is 0.18 S/m at 1 M NaCl at 100 Hz. This proves that the electrolyte concentration can affect and increase the value of the capacitance and conductivity of the supercapacitor electrode.

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Section: Electrical Conductivity Analysismentioning

confidence: 99%

Effect of Electrolyte Concentration on Characteristics of Activated Carbon of Cocoa Peel

Yetri,

Afza,

Julsam

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…These results revealed a poor electrochemical property of the optimized biochar compared to carbon-based material used for energy storage systems. For example, conventional capacitors supercapacitor and batteries which have values of capacitance in the range of 3.4 -763 F/g (Herou et al, 2018), energy density of 3 -275 Wh/kg (Jian et al, 2016;Thomas et al, 2019), and power density of 1-15 kW/kg (Jian et al, 2016).…”

Section: Characteristics Of Optimized Biocharmentioning

confidence: 99%

Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production

Quillope

Carpio

Gatdula

et al. 2021

Heliyon

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Microwave pyrolysis offers rapid and low-cost technology to upgrade agro-forestry residues to high-value products. I-optimal experimental design was used to determine the optimal combination of microwave power and exposure time to maximize biochar yield from corn cob. A validation experiment at optimal conditions of 600 W and 6.9 min produced an average yield of 56.98% on a dry and ash-free basis, agrees with the predicted value (3.43% error) and confirms the adequacy of the model yield equation. Characterization of biochar product revealed an organized mesoporous structure with a carbon content of 62.68%, surface area of 3.05 m 2 /g, pore volume of 0.003 cm 3 /g, capacitance range of 27.14–53.99 μF/g, energy density range of 6.0 × 10 −7 - 1.2 × 10 −6 Wh/kg, and power density range of 9.4 × 10 −4 – 2.49 × 10 −3 W/kg. The biochar produced would require further process to be considered for various industrial applications.

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“…1,2 Many methodologies have been established to prepare three-dimensional or porous carbons with graphitic walls to achieve high surface area and high conductivity, which are of great importance for electrical double-layer capacitors. 3−7 The hydrophobic nature and high surface area of carbon-based materials also provide advantages when employed as catalyst supports, which allows better adsorption and diffusion of reactions. 8,9 Among these carbon materials, templated carbon has been prepared using hard templates, such as zeolites and mesoporous silica.…”

Section: Introductionmentioning

confidence: 99%

Lanthanum Hydroxide Nanorod-Templated Graphitic Hollow Carbon Nanorods for Supercapacitors

et al. 2018

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Lanthanum hydroxide nanorods were employed as both a template and catalyst for carbon synthesis by chemical vapor deposition. The resulting carbon possesses hollow nanorod shapes with graphitic walls. The hollow carbon nanorods were interconnected at some junctions forming a mazelike network, and the broken ends of the tubular carbon provide accessibility to the inner surface of the carbon, resulting in a surface area of 771 m 2 /g. The hollow carbon was tested as an electrode material for supercapacitors. A specific capacitance of 128 F/g, an energy density of 55 Wh/kg, and a power density of 1700 W/kg at 1 A/g were obtained using the ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, as the electrolyte.

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Carbon-Based Electrode Materials for Supercapacitor: Progress, Challenges and Prospective Solutions

Cited by 19 publications

References 40 publications

Effect of Electrolyte Concentration on Characteristics of Activated Carbon of Cocoa Peel

Effect of Electrolyte Concentration on Characteristics of Activated Carbon of Cocoa Peel

Optimization of process parameters of self-purging microwave pyrolysis of corn cob for biochar production

Lanthanum Hydroxide Nanorod-Templated Graphitic Hollow Carbon Nanorods for Supercapacitors

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