Defective Carbon Nanosheets Derived from <i>Syzygium cumini</i> Leaves for Electrochemical Energy‐Storage

Nath, Narayan Chandra Deb; Shah, Syed Shaheen; Qasem, Mohammed Ameen Ahmed; Zahir, Md. Hasan; Aziz, Md. Abdul

doi:10.1002/slct.201900891

Cited by 66 publications

(44 citation statements)

References 56 publications

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“…As shown in Figure 4 d, two main peaks are obvious: the D (defect) peak at ~1353 cm −1 and G (graphite) peak at ~1588 cm −1 [ 59 ]. The intensity ratio I D /I G of AAWHC (1.01) is higher than that of WHC (0.88) and AWHC (0.93), indicating that AAWHC samples contain more edges and defect sites, which are beneficial for electrochemical reactions [ 60 , 61 ].…”

Section: Resultsmentioning

confidence: 99%

Nanoporous Carbon Derived from Green Material by an Ordered Activation Method and Its High Capacitance for Energy Storage

Zhou

Chen

et al. 2020

Nanomaterials

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Carbon materials have been widely used as electrode materials for supercapacitors, while the current carbon precursors are mainly derived from fossil fuels. Biomass-derived carbon materials have become new and effective materials for electrodes of supercapacitors due to their sustainability, low pollution potential, and abundant reserves. Herein, we present a new biomass carbon material derived from water hyacinth by a novel activation method (combination of KOH and HNO3 activation). According to the electrochemical measurements, the material presents an ultrahigh capacitance of 374 F g−1 (the current density is 1 A g−1). Furthermore, the material demonstrates excellent rate performance (105 F g−1 at a higher density of 20 A g−1) and ideal cycling stability (87.3% capacity retention after 5000 times charge–discharge at 2 A g−1). When used for a symmetrical supercapacitor device, the material also shows a relatively high capacity of 330 F g−1 at 1 A g−1 (a two-electrode system). All measurements suggest the material is an effective and noteworthy material for the electrodes of supercapacitors.

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Section: Resultsmentioning

confidence: 99%

Nanoporous Carbon Derived from Green Material by an Ordered Activation Method and Its High Capacitance for Energy Storage

Zhou

Chen

et al. 2020

Nanomaterials

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“…Since EDLCs store energy physically at the electrode‐electrolyte interface based on an electrochemical double‐layer (EDL) mechanism, a high specific surface area is the basic requirement for the AC materials [7,8] . There have been many reports since the turn of the 21 st century on the preparation of porous ACs with high specific surface areas [9–17] . In general, the trend has been to increase capacitance by increasing surface area [18,19] .…”

Section: Introductionmentioning

confidence: 99%

Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High‐performance Supercapacitor: Effect of Type of Electrolytes on Performance

Roy

Shah

Reaz

et al. 2021

Chemistry An Asian Journal

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103

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We demonstrate a facile efficient way to fabricate activated carbon nanosheets (ACNSs) consisting of hierarchical porous carbon materials. Simply heating banana leaves with K2CO3 produce ACNSs having a unique combination of macro‐, meso‐ and micropores with a high specific surface area of ∼1459 m2 g−1. The effects of different electrolytes on the electrochemical supercapacitor performance and stability of the ACNSs are tested using a two‐electrode system. The specific capacitance (Csp) values are 55, 114, and 190 F g−1 in aqueous 0.5 M sodium sulfate, organic 1 M tetraethylammonium tetrafluoroborate in acetonitrile, and pure ionic liquid 1‐butyl‐3‐methylimidazolium hexafluorophosphate ([BMIM][PF6]) electrolytes, respectively. The ACNSs also shows the largest potential window of 3.0 V, the highest specific energy (59 Wh kg−1) and specific power (750 W kg−1) in [BMIM][PF6]. A mini‐prototype device is prepared to demonstrate the practicality of the ACNSs.

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“…[1][2][3][4][5] Besides these applications, due to their large specific surface area (SSA) and good electrical conductivity, ACs are also quite popular as electrode materials in various electrochemical applications such as electrochemical energy storage and sensors. [6][7][8][9][10] Carbonaceous materials are practically applicable from deep-sea to airspace applications, i. e., almost everywhere. Large-scale applications of carbonaceous materials are possible on account of their highly active surface area, welldeveloped pore structure, variety of surface functional groups, high degree of surface reactivity, high electrical conductivity, and good mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

“…Large-scale applications of carbonaceous materials are possible on account of their highly active surface area, welldeveloped pore structure, variety of surface functional groups, high degree of surface reactivity, high electrical conductivity, and good mechanical strength. [1,3,[6][7][8] The world demand for carbonaceous materials is rapidly increasing due to their unique properties and extensive utility in various areas. However, the high cost of commercial carbonaceous materials limits their large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, carbonaceous materials prepared from renewable and low-cost agricultural products, including agricultural byproducts and waste as precursors, which contain enough carbon in their structure, have attracted the interest of researchers all over the world. [6,8,11] The unique properties of these agriculturalproduct-derived materials include their carbon-like high-surface area, versatile porosity, and high electrical and thermal conductivity, allowing them to be used in many different applications. Various agricultural byproducts such as date palm leaves, [4,12,13] tal palm leaves, [14] Albizia procera leaves, [15][16][17] Syzygium cumini leaves, [8] taro stems, [18] rice husks, [19] Pithophora polymorpha, [20] tomato stems, [21] barley straws, [22] sunflower piths, [23] lotus stalks, [24] peanut shell, [25] carrot residue, [26] citrus fruits, [27] and orange peel [28] have been used as suitable precursors for the production of low-cost carbonaceous materials.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Utilization of Jute‐Derived Carbon: A Short Review

Aziz

Shah

Kashem³

2020

The Chemical Record

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This article summarizes the preparation and applications of carbon derived from jute sticks and fibers that are low‐cost, widely available, renewable, and environmentally friendly. Both the fibers and sticks are considered ideal candidates of carbon preparation because they are composed of cellulose, hemicelluloses, and lignin, and contain negligible ash content. Various carbon preparation methods including simple pyrolysis, pyrolysis with chemical and physical activations are discussed. The impacts of several parameters including types of activating agents, impregnation ratio, and temperature on their morphology, surface area, pore size, crystallinity, and surface functional groups are also emphasized. Various treatments to endow functionalization for increasing the practical applicability, such as chemical, physical, and physico‐chemical methods, are discussed. In addition, applications of jute‐derived carbon in various practical areas, including energy storage, water treatment, and sensors, are also highlighted in this report. Due to the porous fine structure and a large specific surface area, the jute‐derived carbon could be considered as a powerful candidate material for various industrial applications. Finally, possible future prospects of jute‐derived carbon for various applications are pointed out.

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Defective Carbon Nanosheets Derived from Syzygium cumini Leaves for Electrochemical Energy‐Storage

Cited by 66 publications

References 56 publications

Nanoporous Carbon Derived from Green Material by an Ordered Activation Method and Its High Capacitance for Energy Storage

Nanoporous Carbon Derived from Green Material by an Ordered Activation Method and Its High Capacitance for Energy Storage

Preparation of Hierarchical Porous Activated Carbon from Banana Leaves for High‐performance Supercapacitor: Effect of Type of Electrolytes on Performance

Preparation and Utilization of Jute‐Derived Carbon: A Short Review

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