Nitrogen-doped carbon nets with micro/mesoporous structures as electrodes for high-performance supercapacitors

Han, Lina; Wei, Xiao; Zhu, Qian-Cheng; Xu, Shumao; Wang, Kai‐Xue; Chen, Jiesheng

doi:10.1039/c6ta05607e

Cited by 90 publications

(31 citation statements)

References 47 publications

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“…The quasi‐rectangular shape of the CVs at high scan rates indicates high reversibility and fast charging capability (Figure b); furthermore, the small distortion of the CV curves is also indicative of effective ionic diffusion, as expected for a mesoporous rich material . Figure c reports C S , normalized by C S,0 , versus the scan rate for the three synthetized materials and the commercial CMC; C S,0 is C S determined at v =0.5 mV s ‐1 .…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Doped Mesoporous Carbons, Prepared from Templating Silica, as Interesting Material for Supercapacitors

et al. 2017

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Highly accessible surface area and heteroatom-doping are desired properties for carbon electrode materials to be used in electrochemical supercapacitors. In this paper, nitrogen and sulfur doped carbon materials with wide mesopores (13-14 nm) were synthetized according to a hard template approach by pyrolysis of sucrose, 1,10-phenanthroline or dibenzothiophene as carbon, nitrogen-carbon or sulfur-carbon precursors, respectively. The morphology and dimension of mesopores were induced by sacrificial SiO2 nanoparticles (10-20 nm), which are removed at the end of synthesis by an etching solution to reveal a network of hemispherical pores. The interconnected pore structure was confirmed by scanning electron microscopy and transmission electron microscopy. X-ray photoemission spectroscopy and elemental analysis confirmed the presence of nitrogen and sulfur functional groups. The prepared materials were fully characterized by cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy in 0.5 M H2SO4. Notwithstanding the small surface (200 m2g-1) determined by BET method, the nitrogen doped mesoporous carbon showed high specific gravimetric (∼170 F g-1) and surface (∼835 F m-2) capacitances that are comparable to those of materials with much higher surface area (5-10-fold higher)

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Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Doped Mesoporous Carbons, Prepared from Templating Silica, as Interesting Material for Supercapacitors

et al. 2017

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“…† LS-NCs showed typical IV nitrogen adsorption-desorption isotherms curves, indicating the existence of micropores and mesopores. 30,31 Isotherms of the obtained LS-NCs exhibited a relatively broad keen in the low-pressure range, implying the existence of microporous structure. LS-NCs possessed a shot-range hysteresis loop at relative pressure P/P 0 from 0.45 to 0.90, exhibiting a well-ordered mesoporous structure.…”

Section: Characterisation Of Structure and Morphologymentioning

confidence: 95%

Preparation of nitrogen-doped porous carbons for high-performance supercapacitor using biomass of waste lotus stems

et al. 2018

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“…Doping with N or B atoms can make CNTs n‐type or p‐type, respectively. Doping can also modulate the band structure of graphene to be a metal–semiconductor transition, allowing for increased binding with ions in solution, and enhanced electrochemical performance in lithium‐ion batteries and supercapacitors . N‐doped vertically aligned CNTs and graphene show improved electrocatalytic activity and stability for the ORR reactions in alkaline media.…”

Section: Heteroatom Dopingmentioning

confidence: 99%

Strategies toward High‐Performance Cathode Materials for Lithium–Oxygen Batteries

Wang

Zhu

Chen

2018

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Rechargeable aprotic lithium (Li)-O batteries with high theoretical energy densities are regarded as promising next-generation energy storage devices and have attracted considerable interest recently. However, these batteries still suffer from many critical issues, such as low capacity, poor cycle life, and low round-trip efficiency, rendering the practical application of these batteries rather sluggish. Cathode catalysts with high oxygen reduction reaction (ORR) and evolution reaction activities are of particular importance for addressing these issues and consequently promoting the application of Li-O batteries. Thus, the rational design and preparation of the catalysts with high ORR activity, good electronic conductivity, and decent chemical/electrochemical stability are still challenging. In this Review, the strategies are outlined including the rational selection of catalytic species, the introduction of a 3D porous structure, the formation of functional composites, and the heteroatom doping which succeeded in the design of high-performance cathode catalysts for stable Li-O batteries. Perspectives on enhancing the overall electrochemical performance of Li-O batteries based on the optimization of the properties and reliability of each part of the battery are also made. This Review sheds some new light on the design of highly active cathode catalysts and the development of high-performance lithium-O batteries.

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Nitrogen-doped carbon nets with micro/mesoporous structures as electrodes for high-performance supercapacitors

Abstract: Supercapacitors based on nitrogen-doped micro/mesoporous carbon nets exhibited excellent specific capacitance and energy density.

Cited by 90 publications

References 47 publications

Nitrogen and Sulfur Doped Mesoporous Carbons, Prepared from Templating Silica, as Interesting Material for Supercapacitors

Nitrogen and Sulfur Doped Mesoporous Carbons, Prepared from Templating Silica, as Interesting Material for Supercapacitors

Preparation of nitrogen-doped porous carbons for high-performance supercapacitor using biomass of waste lotus stems

Strategies toward High‐Performance Cathode Materials for Lithium–Oxygen Batteries

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