Watermelon Peel‐Derived Heteroatom‐Doped Hierarchical Porous Carbon as a High‐Performance Electrode Material for Supercapacitors

Zhang, Pei; Mu, Jiahui; Guo, Ziyu; Wong, Shao Ing; Sunarso, Jaka; Zhao, Yi; Wang, Xing; Zhou, Jin; Zhuo, Shuping

doi:10.1002/celc.202100267

Cited by 33 publications

(28 citation statements)

References 68 publications

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“…Among of them successfully displayed 2D nanofiber and nanosheet carbon nanostructures such as bacterial cellulose, [23] tofu dregs, [24] pineapple and cassava leaves, [25,26] Moringa oleifera stem, [27] and Prosopis juliflora wood. [6] Meanwhile, the 3D hierarchical porous carbon is being generated from watermelon, [28] jujube fruits, [29] garlic seed, [30] corn husk, [31] and mangosteen peel. [32] Interestingly, recently high-potential biomasses with a combination of 3D hierarchical pore properties and self-heteroatom doped significantly enhanced the specific capacitance.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

Taer

Apriwandi

2022

ChemNanoMat

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“…Supercapacitors as energy storage devices have attracted great attention due to their high power density and long cycle life [1–20] . In addition to improving the energy density of supercapacitors, reducing the self‐discharge is also an imperative research task for practical applications of supercapacitors [21–34] .…”

Section: Introductionmentioning

confidence: 99%

“…Supercapacitors as energy storage devices have attracted great attention due to their high power density and long cycle life. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In addition to improving the energy density of supercapacitors, reducing the self-discharge is also an imperative research task for practical applications of supercapacitors. [21][22][23][24][25][26][27][28][29][30][31][32][33][34] Increasing the working voltages of supercapacitors can effectively improve their energy densities, while electrolytes play a critical role in setting the limit of working voltage.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated Ether‐Based Electrolyte for Supercapacitors with Increased Working Voltage and Suppressed Self‐discharge

Yao

Shi

et al. 2022

ChemElectroChem

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The application of supercapacitors for long-term energy storage is largely limited by their low energy density and self-discharge behavior. Finding a way to effectively increase the voltage window (and thus the energy density) and suppress the selfdischarge of supercapacitors is a huge research challenge. Herein, by introducing a fluorinated ether, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (TTE), in triethyl ammonium tetrafluoroborate/acetonitrile solution as the electrolyte of supercapacitors, improved electrolyte stability could be achieved. As a result, a working voltage of 3.6 V was obtained, much higher than the typical working voltage of 2.7 V for acetonitrile-based electrolytes without TTE. In addition, reduced self-discharge was attained after adding TTE in the electrolyte. When charged to 3.6 V, the supercapacitors using TTE-based electrolyte exhibited an open circuit voltage (OCV) decay of 2.03 V after 24 h, lower than that of the supercapacitors without TTE (2.60 V). Mechanistic analysis indicated that the slower self-discharge could be attributed to the suppressed activation-controlled faradaic reaction process caused by electrolyte decomposition.

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“…that existed in biomass itself as the template agents. During the hard template‐assisted synthesis process, the mixture of biomass powder and template nanoparticle (CaO, SiO 2, 13 ZnO, CaCO 3, 14 NaCl, 15 MnO 2 , etc.) are fully grided and then carbonized.…”

Section: Introductionmentioning

confidence: 99%

Template‐assisted synthesis of nitrogen‐doped porous carbon derived from bean dregs for high‐performance supercapacitor

Bin

Zhang

et al. 2022

Asia-Pacific J Chem Eng

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Porous carbon is the commonly used electrode material for supercapacitor, and its electrochemical performance is affected by the factors such as specific surface area (SSA), pore structure, heteroatomic content, and resistivity. In this paper, bean dregs-based porous carbon (BDPC) was synthesized with bean dregs as the carbon and nitrogen sources and magnesium citrate as template.The electrochemical properties of BDPC were investigated in 6 M KOH electrolyte. It is found that BDPC presents a well-developed mesoporous structure and BDPC-20 owns the highest SSA of 1637 m 2 /g. The nitrogen content decreases significantly with the heating rate, debilitating the hydrophilicity of BDPC. High heating rate can increase the relative content of graphitic-N and the degree of graphitization and consequently reduces the resistivity of BDPC enormously. The BDPC-20 shows the lowest resistivity of 97.2 μΩÁm. The cyclic voltammetry curves of BDPC electrodes exhibit the quasi-rectangular shape, demonstrating a typical electrical double-layer capacitor nature of energy storage. According to the galvanostatic charge-discharge measurement, BDPC-10 possesses the largest specific capacitance of 184.0 F/g.

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Watermelon Peel‐Derived Heteroatom‐Doped Hierarchical Porous Carbon as a High‐Performance Electrode Material for Supercapacitors

Cited by 33 publications

References 68 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

Fluorinated Ether‐Based Electrolyte for Supercapacitors with Increased Working Voltage and Suppressed Self‐discharge

Template‐assisted synthesis of nitrogen‐doped porous carbon derived from bean dregs for high‐performance supercapacitor

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