The effect of microwave irradiation in activated carbon processing from sago waste to physical and electrochemical properties of electrode supercapacitor cells

Taer, Erman; Radiawan, R; Taslim, Rika; Awitdrus,; Apriwandi, Apriwandi; Krisman,; Minarni,; Agustino, A; Farma, Rakhmawati; Setiadi, Rahmondia Nanda

doi:10.1088/1742-6596/1120/1/012081

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…Before activation on hightemperature pyrolysis, the density of GLACs ranged from 0.870 to 0.890 g cm À 3 at a standard deviation of 0.010. This value is relatively normal for biomass-based solid carbon, as also reported in previous studies of different waste precursors especially sago waste [27] and Areca catechu husk waste. [28] After multi-activation sequences pyrolyzed at high temperature, the densities of GLAC-5, GLAC7, and GLAC9 were significantly degraded by 0.620, 0.440, and 0.560 g cm À 3 , respectively.…”

Section: Resultssupporting

confidence: 81%

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

et al. 2022

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Recently, micro/mesoporous biomass‐based functional carbon as an excellent electrode material and energy storage device has attracted massive attention due to the availability of abundant raw materials, adaptability to pore structure, good chemical‐physical behaviors, high conductivity, enhanced energy density, and long life cyclic stability. This study performs micro/meso carbon from the novel galangal leaves biomass through KOH and CO2 activation as electrodes material for symmetric supercapacitors. The activated carbon obtained showed a clear hierarchical pore structure with an excellent micro:meso ratio of 56.72 %:43.28 % which caused their high electrochemical properties. The carbon was further assembled into electrodes through a binder‐free solid disc designed to assess the electrochemical performance as a supercapacitor. The results indicated that the galangal leaves‐based adapted micro/mesoporous carbon obtained a high specific capacitance of 161 F g−1 at 1 A g−1. Additionally, the symmetric supercapacitor had a specific capacitance retention rate of 78 % at 10 mV s−1 and low resistance in the aqueous electrolyte of 1 M H2SO4. The maximum energy density was 19.53 Wh kg−1 at an optimum power density of 132.32 W kg−1. Therefore, the appropriate micro/mesopores carbon ratio based on the novel galangal leaves biomass can be considered as a good electrode material for high‐performance supercapacitor.

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Section: Resultssupporting

confidence: 81%

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

et al. 2022

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“…The unique heating mode can quickly and uniformly heat the whole object, including the surface and interior synchronously, which is beneficial to increase the yield and improve the performance of the obtained AC and, thus, reduce the energy consumption. , Therefore, the preparation of AC with MW heating has attracted intensive attention, such as the effects of MW activation parameters on the performances of AC. Taer et al have found that 400 W is the optimal irradiation power for the production of carbon electrode material deriving from sago waste. He et al have found that the increase of the KOH/coke mass ratio is beneficial to increase the pore volume and specific surface area of AC.…”

Section: Introductionmentioning

confidence: 99%

“…27,28 Therefore, the preparation of AC with MW heating has attracted intensive attention, such as the effects of MW activation parameters on the performances of AC. Taer et al 39 have found that 400 W is the optimal irradiation power for the production of carbon electrode material deriving from sago waste. He et al 40 have found that the increase of the KOH/ coke mass ratio is beneficial to increase the pore volume and specific surface area of AC.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Preparation of Hierarchical N and O Co-Doped Corn-Cob-Derived Activated Carbon for a High-Performance Supercapacitor

et al. 2021

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Microwave (MW) treatment was reported as an efficient method to prepare porous carbon-based electrode material with high capacity for a high-performance supercapacitor. Herein, the superiority of the mechanism of MW treatment was tried to be revealed by preparing a N and O co-doped porous activated carbon (MWAC) based on a heteroatomrich corn cob and compared to that of the conventional heating method. The resulting MWAC has a large specific surface area of 2508 m 2 /g with hierarchical micro-and mesoporous structures and abundant heteroatom doping of O and N. In a three-electrode system, the MWAC shows a superior specific capacitance of 560 F/g at a discharge current density of 0.5 A/g in a 6 mol/L KOH aqueous electrolyte. The symmetric supercapacitor fabricated by MWAC electrodes in a 6 mol/L KOH electrolyte shows excellent capacity retention of 96.8%, even after 10 000 galvanostatic charge−discharge cycles at the current density of 1 A/g. The aqueous (6 mol/L KOH) symmetric supercapacitor delivers a high energy density of 9.24 Wh/kg at a power density of 250 W/kg. The results prove that the MW heating shows more superiority in retaining inherent heteroatoms and creating hierarchical micro-and mesoporous structures of activated carbon for supercapacitors with high performance.

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High-efficiency one-step microwave method for high-performance biomass-based hierarchical porous carbon

Wang

Jiang

Zheng

et al. 2022

Biomass Conv. Bioref.

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The effect of microwave irradiation in activated carbon processing from sago waste to physical and electrochemical properties of electrode supercapacitor cells

Cited by 3 publications

References 16 publications

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

Microwave-Assisted Preparation of Hierarchical N and O Co-Doped Corn-Cob-Derived Activated Carbon for a High-Performance Supercapacitor

High-efficiency one-step microwave method for high-performance biomass-based hierarchical porous carbon

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