Superior supercapacitive performance in porous nanocarbons

Ali, Gomaa A. M.; Manaf, Shoriya Aruni Abdul; A, Divyashree; Hegde, Gurumurthy

doi:10.1016/j.jechem.2016.04.007

Cited by 73 publications

(20 citation statements)

References 36 publications

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“…In addition, the EIS test in Figure 5 c exhibits the low charge transfer resistance (~0.02 Ω) and solution resistance (~0.45 Ω) of the device. For a practical application, the Ragone plot in Figure 5 d shows the highest energy density, at 20.15 Wh·kg −1 , at a power density of 500 W·kg −1 , demonstrating superior performance compared with previous reports such as stiff silkworm (234 W·kg −1 at 7.9 Wh·kg −1 ) [ 24 ], oil palm leaf (41 W·kg −1 at 13 Wh·kg −1 ) [ 25 ], lotus seedpod (260 W·kg −1 at 12.5 Wh·kg −1 ) [ 26 ], and bagasse (182 W·kg −1 at 20 Wh·kg −1 ) [ 27 ]; even some asymmetric devices Co 3 O 4 @MnO 2 //MEGO (650 W·kg −1 at 17.7 Wh·kg −1 ) [ 28 ] and Co 3 O 4 @MnO 2 //MEGO (400 W·kg −1 at 21.1 Wh·kg −1 ) [ 29 ]. What’s more important, in Figure 5 e, the specific capacitance of the device shows almost no decay after 4000 cycles, demonstrating excellent stability of corncob-derived carbon materials.…”

Section: Resultsmentioning

confidence: 70%

Converting Corncob to Activated Porous Carbon for Supercapacitor Application

Yang

Zhang

2018

Nanomaterials

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Carbon materials derived from biomass are promising electrode materials for supercapacitor application due to their specific porosity, low cost and electrochemical stability. Herein, a hierarchical porous carbon derived from corncob was developed for use as electrodes. Benefitting from its hierarchical porosity, inherited from the natural structure of corncob, high BET surface area (1471.4 m2·g−1) and excellent electrical conductivity, the novel carbon material exhibited a specific capacitance of 293 F·g−1 at 1 A·g−1 in 6 M KOH electrolyte and maintained at 195 F·g−1 at 5 A·g−1. In addition, a two-electrode device was assembled and delivered an energy density of 20.15 Wh·kg−1 at a power density of 500 W·kg−1 and an outstanding stability of 99.9% capacitance retention after 4000 cycles.

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Section: Resultsmentioning

confidence: 70%

Converting Corncob to Activated Porous Carbon for Supercapacitor Application

Yang

Zhang

2018

Nanomaterials

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“…Typically, graphene as a type of two-dimensional carbon with large specific area and high conductivity, has been investigated as electrode material incorporated with metal oxides [240,241] . Especially, NiCo 2 O 4 /graphene composite exhibited outstanding electrochemical performance owing to the synergetic effect between conductive graphene and high theoretical capacity of ( Fig.…”

Section: Nico 2 O 4 -Carbon Based Compositesmentioning

confidence: 99%

Review and prospect of NiCo2O4-based composite materials for supercapacitor electrodes

Xiao

et al. 2019

Journal of Energy Chemistry

298

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“…The precursor is a biorenewable resource, areca nut kernel, and CNSs are produced by a catalyst‐free, one‐pot pyrolysis technique, ensuring cost‐effective carbon source and synthetic procedure. This work is a continuation of our previous studies on waste‐to‐wealth approach . The bio‐derived CNSs are directly used as catalytic support to Pd without any further activation, unlike the activated carbon materials that are currently in use .…”

Section: Introductionmentioning

confidence: 90%

Cost‐effective bio‐derived mesoporous carbon nanoparticles‐supported palladium catalyst for nitroarene reduction and Suzuki–Miyaura coupling by microwave approach

Supriya¹,

Ananthnag²,

Shetti

et al. 2020

Applied Organom Chemis

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A new heterogeneous catalyst was synthesized by immobilizing Pd on areca nut kernel‐derived carbon nanospheres (CNSs). The CNSs, without any further activation processes, accommodated 3% of Pd on their surface. The new Pd/CNS material was used for the reduction of nitroarenes and Suzuki–Miyaura coupling of bromoarenes with aryl boronic acids. The reactions were conducted under microwave irradiation at 160 °C using 12 mol% of Pd/CNS (0.36% actual Pd content). The reduction of nitroarenes into their respective amino compounds was achieved in 10–20 min (conversion up to 100%); by contrast, the Suzuki–Miyaura reactions yielded up to 98% at 150 °C with 10 mol% of Pd/CNS catalyst. The products were identified using gas chromatography and nuclear magnetic resonance spectroscopy. The catalyst was isolated from reaction mixture and reused without any significant loss in the activity. Thus, the present work introduces one‐pot‐derived porous CNSs as efficient catalytic support to Pd, establishing an alternative to existing Pd/C in terms of cost and efficiency.

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Superior supercapacitive performance in porous nanocarbons

Cited by 73 publications

References 36 publications

Converting Corncob to Activated Porous Carbon for Supercapacitor Application

Converting Corncob to Activated Porous Carbon for Supercapacitor Application

Review and prospect of NiCo2O4-based composite materials for supercapacitor electrodes

Cost‐effective bio‐derived mesoporous carbon nanoparticles‐supported palladium catalyst for nitroarene reduction and Suzuki–Miyaura coupling by microwave approach

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