Activated biomass carbon made from bamboo as electrode material for supercapacitors

Zhang, Guoxiong; Chen, Yuemei; Chen, Yigang; Guo, Haibo

doi:10.1016/j.materresbull.2018.03.006

Cited by 262 publications

(83 citation statements)

References 28 publications

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“…All samples showed that the charge‐discharge time decreased with the increase of current density. The specific capacitance was estimated by Equation based on the CD curves. The energy density and power density were calculated based on Equation and Equation :

normalC = \frac{IΔt}{mΔV}

normalE = \frac{normalC \times {(ΔV)}^{2}}{2}

P = \frac{E}{Δt}

where C (F·g −1 ) is specific capacitance; E (Wh·kg −1 ) is energy density; P (W·kg −1 ) is power density; I (A) is discharge current; m (g) refers to the material mass; Δt (s) is discharge time; ΔV (V) is the voltage change.…”

Section: Resultsmentioning

confidence: 99%

“…The increase in the surface area supports better electrolyte access and enhances ion diffusion, so the higher capacitance of ABC‐900 is associated with its higher surface area. In addition, many researchers also indicated that mesoporous structures can improve the electrode at the electrode/electrolyte interface to enhance the electrochemical performance of the electrode . The ABC‐900 sample was tested in a three‐electrode configuration with a maximum specific capacitance of 175.6 F·g −1 at 0.5 A·g −1 , primarily because of its high BET surface area and micro‐mesopore structure.…”

Section: Resultsmentioning

confidence: 99%

“…All samples showed that the charge-discharge time decreased with the increase of current density. The specific capacitance was estimated by Equation (10) 49,50 based on the CD curves. The energy density and power density were calculated based on Equation (11) and Equation (12) 51 :…”

Section: Electrocapacitive Performancementioning

confidence: 99%

“…In addition, many researchers also indicated that mesoporous structures can improve the electrode at the electrode/electrolyte interface to enhance the electrochemical performance of the electrode. 49 The ABC-900 sample was tested in a three-electrode configuration with a maximum specific capacitance of 175.6 FÁg −1 at 0.5 AÁg −1 , primarily because of its high BET surface area and micro-mesopore structure. The results are comparable to some biomass-derived carbons and advanced carbon nanomaterials.…”

Section: Electrocapacitive Performancementioning

confidence: 99%

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Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Quan

Gao

2020

Int J Energy Res

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Summary Biomass based carbon has captured more and more attention because it is environmentally friendly and has properties of low cost and ideal sustainability. In this study, three kinds of activated biomass carbons (ie, ABC‐700, ABC‐800 and ABC‐900) were first carbonized through pine sawdust pyrolysis and then activated using KOH under three different activation temperatures (ie, 700°C, 800°C and 900°C). The structure properties of the prepared activated biomass carbons were characterized by N2‐adsorption/desorption, SEM, TEM, XRD, Raman, XPS, TG and ultimate analysis. To clarify the activation mechanism, the gas products produced during KOH activation process were measured online with an ETG gas analyzer. The performance of the activated biomass carbons derived from pine sawdust for supercapacitor and CO2 capture was then evaluated. The predominant gas products during the activation process are H2 and CO. It indicates that the porous structure was created by using an enhanced etching reaction between carbon atoms and KOH. An increment of the activation temperature from 700 to 900°C results in the increase of surface area (from 1728.66 to 2330.89 m2/g) and total pore volume (from 0.671 to 1.914 cm3/g). Among the three samples, ABC‐900 exhibits the maximal specific capacitance of 175.6 F·g−1 and high energy density of 24.39 Wh·kg−1 at the 0.5 A·g−1. And the ABC‐700 shows the maximal CO2 capture capacity of 4.21 mmol/g and high selectivity of CO2 over N2 at 298 K and 1 bar. In addition, ABC‐700 also has excellent stability and reproducibility after 15 times adsorption‐desorption cycles. The unexceptionable electrochemical performance and adsorption capacity of the biomass‐carbons show its broad application prospects in the field of supercapacitors and CO2 capture.

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normalC = \frac{IΔt}{mΔV}

normalE = \frac{normalC \times {(ΔV)}^{2}}{2}

P = \frac{E}{Δt}

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Electrocapacitive Performancementioning

confidence: 99%

Section: Electrocapacitive Performancementioning

confidence: 99%

See 2 more Smart Citations

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Quan

Gao

2020

Int J Energy Res

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“…Biomass-derived porous carbon materials have been reported to be synthesized through hydrothermal carbonization [11][12][13], direct carbonization followed by activation [14][15][16][17][18], soft and hard template carbonization [19][20][21] and molten salt carbonization [22][23][24]. Of the aforementioned routes, direct carbonization followed by activation has gained more attention because it increases the surface area of the porous carbon and easily adjusts the mesopores to micropores which plays an important role in energy storage.…”

Section: Introductionmentioning

confidence: 99%

Highly microstructured porous carbon derived from vitex mombassae for high specific capacitance supercapacitors

Kibona

2019

SN Appl. Sci.

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This study reports on producing highly porous carbon materials by carbonization and activation of biomass (Vitex mombassae) seed wastes. The pore textural properties and microstructures of the synthesized materials are controlled by adjusting the activation temperature from 600 to 800 °C. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, Raman and nitrogen adsorption and desorption are used to study the physical characteristics of the synthesized materials. The Brunauer-Emmet-Teller surface area, micropore surface area and pore volume increase with activation temperature. At activation temperature of 700 °C, the porous carbon acquires high specific area (2044 m 2 g −1). The pore volume increases with increase in activation temperature 0.8-1.1 cm 3 g −1 with high self-doping oxygen content. As a result of good physical characteristics, the prepared electrodes exhibit excellent performance with the specific capacitance up to 437 F g −1 at 5 mV s −1 in 6 M KOH electrolyte. The good capacitive behavior of the synthesized porous carbon depends on high surface area, micropore pore volume as well as moderate microstructures. The synthesized sample demonstrates high cyclic stability with capacitance retention of over 90% after 50,000 cycles.

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Sustainable Materials for Electrochemical Supercapacitors

Kumar,

Thangappan

2023

Sustainable Materials for Electrochemical Capacitors

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Activated biomass carbon made from bamboo as electrode material for supercapacitors

Cited by 262 publications

References 28 publications

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Highly microstructured porous carbon derived from vitex mombassae for high specific capacitance supercapacitors

Sustainable Materials for Electrochemical Supercapacitors

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Activated biomass carbon made from bamboo as electrode material for supercapacitors

Cited by 262 publications

References 28 publications

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO 2 capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO 2 capture

Highly microstructured porous carbon derived from vitex mombassae for high specific capacitance supercapacitors

Sustainable Materials for Electrochemical Supercapacitors

Contact Info

Product

Resources

About

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture

Preparation of activated biomass carbon from pine sawdust for supercapacitor and CO ₂ capture