Sustainable process for all-carbon electrodes: Horticultural doping of natural-resource-derived nano-carbons for high-performance supercapacitors

Seo, Dong Han; Yick, Samuel; Su, Dawei; Wang, Guoxiu; Han, Zhao Jun; Ostrikov, Kostya Ken

doi:10.1016/j.carbon.2015.05.018

Cited by 25 publications

(5 citation statements)

References 68 publications

(82 reference statements)

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“…(B) Comparative CV curve of NC‐800 and NCF‐800 electrode material in 1 M H 2 SO 4 electrolyte. (C) Comparative %nitrogen content vs specific capacitance plot of NCF‐800 electrode material with reported literatures 25‐42 . (D) comparative GCD of NC‐800 and NCF‐800 electrode material at 0.5 Ag −1 current density (E) differentiation of capacitive contribution from CV curve at 10 mV/s scan rate.…”

Section: Resultsmentioning

confidence: 94%

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Bailmare

Wagh²,

Narkhede³

et al. 2022

Intl J of Energy Research

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Heteroatom doping in carbon displays exciting chemistry and plays an extremely important role in improving electrochemical performances. For instance, in energy storage devices, carbon allotropes showed excellent capacitive characteristics, however, their limiting ion storing capability cannot meet current requirements. Herein, the work discusses a simple technique for developing functionalized N-doped carbon to provide an easy access to ion percolation with high specific surface area of 709.09 m 2 g À1 . The optimized carbon material delivers high gravimetric capacitance 295Fg À1 with high volumetric capacitance of 270Fcm À3 . Also, the high electrochemical performance of its symmetric device 268Fg À1 at 0.25 Ag À1 current density with noticeably high cyclic stability of 100 000 cycles with 90% capacitance retention reveals an excellent approach to the device applications. These results imply an optimized nitrogen content that strongly influences the electrochemical performance of carbon material and opens up opportunities for designing high-performance energy storage devices.

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Section: Resultsmentioning

confidence: 94%

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Bailmare

Wagh²,

Narkhede³

et al. 2022

Intl J of Energy Research

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“…What's more, the maximum energy density of the HA-900//HA-900 symmetric supercapacitor precede that of previously reported carbon-based supercapacitors. [48][49][50][51][52][53]…”

Section: Resultsmentioning

confidence: 99%

Preparation of N, P co-doped activated carbons derived from honeycomb as an electrode material for supercapacitors

Yan

Luo

et al. 2017

RSC Adv.

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“…Both electrodes were then encapsulated into a button-type cell with a NKK fiber membrane (Φ16 mm) as the septum and 3 M KOH as the electrolyte. To estimate the electrochemical performance of the fabricated symmetric supercapacitor device based on NDs-rGO, CV, GCD, and EIS curves were recorded with 3 M KOH as the electrolyte in variant voltage windows (0−1.0, 1.05, and 1.1 V) and various scan rates (5,10,20,30,40, and 50 mV s −1 ). To compare the electrochemical performance of rGO and NDs-rGO electrodes, the specific capacitance (C s , F g −1 ), Coulombic efficiency (%), energy density (E, W h kg −1 ), and power density (P, W kg −1 ) were calculated according to the following formulas 27,28,30…”

Section: Electrochemical Measurementmentioning

confidence: 99%

“…As a result, it has emerged as one of the most promising electrode materials for supercapacitors . Despite numerous efforts to improve the electrochemical performance of graphene-based all-carbon symmetric supercapacitors with aqueous electrolytes, the working voltage continues to remain below 1.0 V. − Research has shown that the electroconductivity and thermal conductivity between graphene layers are relatively poor. This hinders heat transfer during the charging process, leading to heat accumulation, a decrease in the potential for water splitting, and ultimately reducing the working voltage of supercapacitors. − Therefore, there is considerable interest in enhancing the electroconductivity and thermal conductivity between graphene layers to achieve high-performance graphene-based all-carbon symmetric supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

Lu,

Xie,

Yang

et al. 2024

Ind. Eng. Chem. Res.

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The local thermal accumulation induced by the charging process of the aqueous supercapacitors will facilitate water splitting, which seriously decreases the energy density and safety of aqueous supercapacitors. Therefore, it is necessary to evacuate the heat from the active sites and identify the types of side reactions. In this study, we employ a self-assembly strategy to successfully synthesize a highly thermally conductive three-dimensional nanodiamond-reduced graphene oxide (NDs-rGO) aerogel. The NDs-rGO aerogel is used as the electrode material, which can expand the operating voltage of alkaline aqueous symmetric supercapacitors to 1.1 V, much higher than that of previously reported carbon-based symmetric supercapacitors (≤1.0 V). Moreover, we have, for the first time, utilized scanning electrochemical microscopy to confirm the beneficial role of materials with thermally conductive interfaces in dissipating heat during the charging process of supercapacitor electrodes. As a result, the aqueous NDs-rGO supercapacitor device exhibits excellent reversibility (100% capacitance retention after 10,000 cycles) and achieves an energy density of 12.2 W h kg −1 at a high working voltage of 1.1 V. The excellent electrochemical performance may be ascribed to the fact that the redox self-assembly process in NDs-rGO creates high thermal-conductivity heterogeneous interfaces between sp 2 −sp 3 structures, enabling rapid heat dissipation during the charging process, suppressing water splitting, and thus increasing the working voltage of the supercapacitors.

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Sustainable process for all-carbon electrodes: Horticultural doping of natural-resource-derived nano-carbons for high-performance supercapacitors

Cited by 25 publications

References 68 publications

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Preparation of N, P co-doped activated carbons derived from honeycomb as an electrode material for supercapacitors

Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

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Sustainable process for all-carbon electrodes: Horticultural doping of natural-resource-derived nano-carbons for high-performance supercapacitors

Cited by 25 publications

References 68 publications

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Nitrogen optimized highly stable carbon for increasing the efficiency of supercapacitors

Preparation of N, P co-doped activated carbons derived from honeycomb as an electrode material for supercapacitors

Prompt Thermal Transfer Across the sp3–sp2 Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors

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Prompt Thermal Transfer Across the sp³–sp² Interfaces for the Enhanced Electrochemical Performance of Aqueous Carbon-Based Supercapacitors