A facile approach of micro-mesopores structure binder-free coin/monolith solid design activated carbon for electrode supercapacitor

Apriwandi, Apriwandi; Taer, Erman; Farma, Rakhmawati; Setiadi, Rahmondia Nanda; Amiruddin, Erwin

doi:10.1016/j.est.2021.102823

Cited by 48 publications

(34 citation statements)

References 70 publications

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“…[42,43] Additionally, the reflection plane (002) exhibit a precise peak increase at MOAC-ZnCl 2 (2θ = 25°), compared to MOAC-H 3 PO 4 and MOAC. This indicated relatively high micropores density, [36,44] exhibiting similarities to the data shown in the N 2 gas absorption analysis.…”

Section: Materials Analysessupporting

confidence: 73%

“…With an average deviation standard of ±0.036, the density of the monolith samples before the pyrolysis process was 0.9340, 0.9423, and 0.9472 g cm −3 for MOAC, MOAC‐H 3 PO 4 , and MOAC‐ZnCl 2 , respectively (Figure 1). As previously reported, these values were considered normal for the monolith samples based on the biomass material [35,36] . Furthermore, the pyrolytic process in the N 2 ‐CO 2 environment significantly evaporated the non‐carbon precursor complex compound (steam water and carbon monoxide), which outstandingly affected the density of the samples.…”

Section: Resultsmentioning

confidence: 99%

“…As previously reported, these values were considered normal for the monolith samples based on the biomass material. [35,36] Furthermore, the pyrolytic process in the N 2 -CO 2 environment significantly evaporated the non-carbon precursor complex compound (steam water and carbon monoxide), which outstandingly affected the density of the samples. At 30-600 °C, the water content and volatiles were completely evaporated, accompanied by the degradation of hemicellulose and cellulose.…”

Section: Materials Analysesmentioning

confidence: 99%

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Biomass‐based Self‐single‐oxygen Heteroatom‐doped Hierarchical Porous Carbon Nanosheets for High‐performance Symmetrical Supercapacitors

Taer

Apriwandi

2022

ChemNanoMat

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Biomass‐based porous carbon holds potential for improving the electrochemical performance of supercapacitors due to its high surface area, 2D nanostructure, 3D hierarchical pores, and self‐multi‐doped‐heteroatoms. Here, 2D and 3D porous carbon nanostructures, as well as self‐single‐doped oxygen were successfully obtained from Moringa oleifera leaves waste by a facile, time‐saving, and cost‐effective strategy. The dried powder precursor was chemically provided with 0.5 m/L H3PO4 and ZnCl2 solutions at high‐temperature pyrolysis. Furthermore, electrode material was designed with sleekly slim binder‐free solid coins. The obtained porous carbon has a 2D nanosheet‐nanofiber and rich‐3D hierarchical porous structure with significantly high sub‐ultra micropores. Meanwhile, 17.62 % self‐doped oxygen was found to provide an extra pseudocapacitance effect. The optimum carbon possessed high electrochemical properties at a specific capacitance of 201 F g−1 in 1 M H2SO4 electrolyte. Furthermore, the maximum energy density was obtained at 25 Wh kg−1, at optimum power of 122 W kg−1 in current density of 1.0 A g−1. The electrochemical behavior of these samples was also reviewed through a 1 M Na2SO4 neutral aqueous electrolyte. Therefore, the great potential of Moringa oleifera leaves was observed as a porous carbon source with good material properties for enhancing the performance of electrochemical energy storage devices.

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Section: Materials Analysessupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Materials Analysesmentioning

confidence: 99%

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Biomass‐based Self‐single‐oxygen Heteroatom‐doped Hierarchical Porous Carbon Nanosheets for High‐performance Symmetrical Supercapacitors

Taer

Apriwandi

2022

ChemNanoMat

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“…The impregnated zinc chloride and pyrolysis processes consisting of carbonization and physical activation in an N 2 ‐CO 2 gas environment simultaneously affect the dimensions of pelleted activated carbon 39 . The mass, thickness, and diameter of the pellet were reduced regularly according to the heat treatment applied to the sample 40 . High‐temperature pyrolysis decomposes basic biomass components such as hemicellulose, cellulose, and lignin 41 .…”

Section: Resultsmentioning

confidence: 99%

“…39 The mass, thickness, and diameter of the pellet were reduced regularly according to the heat treatment applied to the sample. 40 High-temperature pyrolysis decomposes basic biomass components such as hemicellulose, cellulose, and lignin. 41 Hemicellulose and cellulose decompose at relatively low temperatures ranging from 120 C to 240 C, and from 25 C to 380 C, respectively.…”

Section: Electrode Preparation and Electrochemical Measurementmentioning

confidence: 99%

Synthesis free‐template highly micro‐mesoporous carbon nanosheet as electrode materials for boosting supercapacitor performances

Taer

Apriwandi

Mardiah

et al. 2022

Intl J of Energy Research

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Summary Porous carbon 2D nanosheets (CNSs) with micro‐mesopores interconnected are indispensable for energy conversion systems and storage applications. Herein, we synthesize free‐template highly micro‐mesoporous carbon nanosheet as electrode material for boosting supercapacitor performances. The activated carbon nanosheets derived from bio‐waste were prepared by chemical impregnation followed by high‐temperature pyrolysis without hard/soft/salt template‐assisted and free‐binder adhesives. Garlic skin wastes were selected as a precursor. Furthermore, activated carbon was designed in pellet/coin solids without the addition of binder materials. The porous carbon pellets exhibit a thin 2D nanosheet structure of 15 nm followed by unique wooden labyrinth‐like and rod‐like structures. The result showed that the impregnation of different chemical concentrations increases the surface area to 273% as high as 1002.920 m2 g−1 with a total volume of 1.3270 cm3 g−1. Moreover, the mesoporosity dominated 66.4%, followed by sub‐ultra‐micropores. In the symmetric supercapacitor, the carbon nanosheet boosted the specific capacitance almost 3‐fold to 320.95 F g−1 in the aqueous electrolyte of 1 M H2SO4. The supercapacitor cell has a high energy density of 43.12 Wh kg−1 and power density of 161.99 W kg−1 at a constant current density of 1.0 A g−1. This work proposes a more effective, green, efficient, and controlled approach to obtain bio‐waste‐based porous carbon 2D nanosheet with a controlled pore structure for energy conversion and storage systems. Novelty Statement The novelty of this study is a green synthesis has possessed highly micro‐mesopores nanosheet bio‐waste. 2D nanosheet was prepared free‐template and free‐binder. Sub‐ultra‐micropores were confirmed with dominated mesoporosity of 66.8%. Carbon nanosheet boosted specific capacitance almost 3‐fold to 320.95 F g−1.

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Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Zhao

Liu

et al. 2022

Adv Energy and Sustain Res

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Supercapacitors (SCs), an important kind of electrochemical energy storage device, are featured with high power density, rapid charging and discharging, and ultralong cycling lifespan and have been widely applied in multiscenario energy storage and output systems, such as portable consumer electronics, electric vehicles, and reservoir setups for green and sustainable energy resources. Among their components, electrode materials are of primary importance in dictating their performances. Owing to good electric conductivity, achievably large specific surface area, low cost, chemical stability, and easy loading with other electrochemically active species, various carbon nanomaterials, including activated carbons, carbon nanotubes, graphene, and other porous carbons, are promising electrode materials in the fabrication of high-performance SCs. In fact, the past decade has witnessed enormous efforts in the development of highperformance carbon-based SC electrode materials and great progresses achieved in the field. In this review, recent advances on these carbon-based SCs are summarized through a number of selected representative works. In each one, the unique preparation method, structural features, and their correlations to electrochemical properties and final SC performance are presented and discussed. At the end of the review, the challenges and future developing prospects are briefly outlined.

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A facile approach of micro-mesopores structure binder-free coin/monolith solid design activated carbon for electrode supercapacitor

Cited by 48 publications

References 70 publications

Biomass‐based Self‐single‐oxygen Heteroatom‐doped Hierarchical Porous Carbon Nanosheets for High‐performance Symmetrical Supercapacitors

Biomass‐based Self‐single‐oxygen Heteroatom‐doped Hierarchical Porous Carbon Nanosheets for High‐performance Symmetrical Supercapacitors

Synthesis free‐template highly micro‐mesoporous carbon nanosheet as electrode materials for boosting supercapacitor performances

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

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