The performance of supercapacitor electrodes developed from chemically activated carbon produced from waste tea

İnal, İ. Işıl Gürten; Holmes, Stuart M.; Banford, Anthony; Aktaş, Zeki

doi:10.1016/j.apsusc.2015.09.067

Cited by 198 publications

(65 citation statements)

References 50 publications

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“…and 123 F g -1 respectively), 48 chlorella vulgaris based activated carbon (117 F g -1 ), 49 and biomass-reed derived carbon nanosheet (147 F g -1 ). 50 Also, our CNF/CNTs based electrodes have exceed properties of cellulose/activated carbon composite materials (103.8 F g -1 ).…”

Section: Capacitance Of the Cnf/cnts Samplesmentioning

confidence: 99%

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Deng

Kim

et al. 2017

J. Electrochem. Soc.

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We report the production of cellulose-derived hybrid carbon nanofiber (CNF)/ carbon nanotubes (CNTs) electrodes for the fabrication of high-performance supercapacitors. The CNTs were grown via a floating catalyst chemical vapor deposition (CVD) method on the top surface of electrospun cellulose-derived CNFs. The morphology of these hybrid CNF/CNTs fibrous structures was investigated using scanning electron and transmission electron microscopy. The development of these carbon structures was characterized using Raman spectroscopy. The electrochemical performance of the devices including cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), electrochemical impedance spectroscopy measurements (EIS), and electrochemically stability was carried out. These hybrid CNF/CNTs electrodes had a high value of specific capacitance of 149 F g −1 at a current density 0.5 A g −1 , an increase of 15% compared with pristine CNFs. The BET specific surface area increases from 712 m 2 g −1 to 1211 m 2 g −1 from pristine CNFs to hybrid CNF/CNTs, leading to a specific capacitance (per unit area) of ∼170 mF cm −2 . These supercapacitors also retain 90% of the original capacitance over 1000 cycles, showing an excellent stability. This method of supercapacitor electrode production is suggested as a basis to convert a sustainable cellulosic material into a useful energy storage material.

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Section: Capacitance Of the Cnf/cnts Samplesmentioning

confidence: 99%

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Deng

Kim

et al. 2017

J. Electrochem. Soc.

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“…16,53 Figure 11 shows the impedance diagram of the electrode, called the Nyquist curve. the conductivity of the detection electrode).…”

Section: Resultsmentioning

confidence: 99%

“…In this test, low amplitude alternating current is applied at an open circuit potential to study the penetration ability of ions through the porous network of electrodes at different frequencies. 16,53 Figure 11 shows the impedance diagram of the electrode, called the Nyquist curve. The Nyquist curve has a semicircle in the high frequency region, which is a typical characteristic of the porous electrode.…”

Section: Resultsmentioning

confidence: 99%

Hierarchically porous carbon derived from the activation of waste chestnut shells by potassium bicarbonate (KHCO ₃ ) for high‐performance supercapacitor electrode

Peng

Liu²,

Zhang

et al. 2019

Int J Energy Res

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3D hierarchical porous carbon consisting of micropores, mesopores and macropores was successfully prepared through the activation of chestnut shell via KHCO 3 . The influence of KHCO 3 /chestnut shell ratio on the textural properties was carefully investigated and the structure, micrographs, and surface chemical status of the materials were expressed via X-Ray diffraction (XRD), transmission electron micrographs (TEM), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), respectively. With the optimized amount of KHCO 3 , high specific pore surface area (2298 m 2 g -1 ) and high total pore volume (1.51 cm 3 g -1 ) were achieved, endowing an advantageous electrochemical characteristics for the electrode as ultracapacitors in three-electrode system. At 2 A g -1 , a high specific electric capacity of 387 F g -1 was reached. The remarkable electrochemical performances are mainly due to hierarchical porous structure with the high specific surface area (SSA) and the eminent total pore volume. It means that this hierarchical porous carbon prepared by activated by using KHCO 3 would have more promising foreground in the field of energy storage.

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“…The preparation of activated carbon from waste biomass has a long history [1]- [8], but still now attracting attentions from various ecological standpoints of view [9] [10] [11] and being reviewed [12].…”

Section: Introductionmentioning

confidence: 99%

Short-Time Preparation of NaOH-Activated Carbon from Sugar Cane Bagasse Using Microwave Plasma Heating

Konno¹,

Oike²,

Ohba³

et al. 2017

GSC

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The microwave induced argon plasma was applied to the preparation of NaOH-activated carbon from sugar cane bagasse. The distinguished feature of the heating technique with this cold plasma is the short operation time. The carbonization and the activation process were finalized in one step within 3 min. The prepared activated carbon with NaOH ratio 3 to bagasse characterized using N 2 adsorption of type IV (IUPAC classification) to give specific surface area of 1980 m 2 /g and mesopore volume of 0.73 ml/g. It also showed a higher specific capacitance of 201 F/g in 1 M H 2 SO 4 solution (with standard three electrodes) than the corresponding one by the conventional heating, previously reported. The other features were the absence of oxygen groups and the presence of carbon centered stable radicals, detected by ESR spectra, on the surface.

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The performance of supercapacitor electrodes developed from chemically activated carbon produced from waste tea

Cited by 198 publications

References 50 publications

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Hierarchically porous carbon derived from the activation of waste chestnut shells by potassium bicarbonate (KHCO ₃ ) for high‐performance supercapacitor electrode

Short-Time Preparation of NaOH-Activated Carbon from Sugar Cane Bagasse Using Microwave Plasma Heating

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The performance of supercapacitor electrodes developed from chemically activated carbon produced from waste tea

Cited by 198 publications

References 50 publications

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Growth of Carbon Nanotubes on Electrospun Cellulose Fibers for High Performance Supercapacitors

Hierarchically porous carbon derived from the activation of waste chestnut shells by potassium bicarbonate (KHCO 3 ) for high‐performance supercapacitor electrode

Short-Time Preparation of NaOH-Activated Carbon from Sugar Cane Bagasse Using Microwave Plasma Heating

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Hierarchically porous carbon derived from the activation of waste chestnut shells by potassium bicarbonate (KHCO ₃ ) for high‐performance supercapacitor electrode