Highly porous carbon nanofibers co-doped with fluorine and nitrogen for outstanding supercapacitor performance

Na, Wonjoo; Jun, Ji Hae; Park, Jin Wook; Lee, Gyeongseop; Jang, Jyongsik

doi:10.1039/c7ta04406b

Cited by 180 publications

(103 citation statements)

References 50 publications

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“…These are higher than the previous studies reported, [62][63][64][65][66] such as Co 9 S 8 //AC. NC@CoSe 2 //Co-NC@Fe 2 O 3 shows the maximum power density of 8.9 kW/kg at an energy density of 14 Wh/kg.…”

Section: Electrochemical Propertiescontrasting

confidence: 70%

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Zhu

Guan

Cai

et al. 2019

Batteries & Supercaps

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Metal-organic frameworks (MOFs)-derived nanoarrays have been widely used as electrode materials in energy storage applications with the unique morphology and large specific surface area. Herein, we report a series of N-doped carbon arrays embedded with different metal compounds (noted as NC@Co 3 O 4 , NC@CoSe 2 and NC@CoS 2 ), which have been derived from a Co-based MOF through simple fabrication processes. The resulted structures have high surface-to-volume ratio and short charge-transfer paths in electrochemical reactions, which greatly benefit the energy storage performance. An asymmetric supercapacitor of NC@CoS 2 //Co-NC@Fe 2 O 3 is also demonstrated, which has a power density up to 23.5 kW/kg and illustrates good cycling stability after long-time rapid charging and discharging. This work demonstrates a promising way to develop MOF-derived nanoarrays for flexible energy storage devices.

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Section: Electrochemical Propertiescontrasting

confidence: 70%

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Zhu

Guan

Cai

et al. 2019

Batteries & Supercaps

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“…Moreover, the two peaks became broaden with the increase of temperature, indicating the amorphous properties of these materials . Raman spectra is widely used to analyse the structural vibration and graphitisation degree of carbon materials . D‐peak near 1329 cm −1 representing the lattice defects of C atom and G‐peak is about 1583 cm −1 referring to the in‐plane stretching vibration of sp 2 hybridization of C atoms .…”

Section: Results and Discussiontextural And Structural Propertiesmentioning

confidence: 88%

A Facile Synthesis of Nitrogen‐Doped Porous Carbon Materials for High‐Performance Supercapacitors

Chen

Song

et al. 2019

ChemistrySelect

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A simple way for N‐doped porous carbon materials (ANCs) was prepared in N2 atmosphere through the KOH‐assisted carbonization of commercial melamine foam (MF) attached glucose. Adding glucose and KOH activation process have great effects on improving the electrochemical properties of ANCs materials. Compared with other materials, the optimal ANCs‐800, which is obtained with a KOH/glucose/MF weight ratio of 5:20:1 at 800 °C, exhibits the best capacitance performance with the specific surface area (SSA) of 1481 m2 g−1 and high nitrogen content of 3.7 at. %. It possesses prominent specific capacitance (387 F g−1 at 0.5 A g−1) and excellent cycling stability (98.6% retention after 10,000 cycles). Furthermore, in the symmetric supercapacitor, the ANCs‐800 electrode material maintains high energy density (24.2 W h kg−1 at 701.07 W kg−1) and great cycling performance (96.3% after 10,000 cycles). Accordingly, the facile synthetic approach and attractive electrochemical properties make ANCs‐800 a popular capacitor material.

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“…As shown in Figure f, the ‘C s ’ of D‐graphene at 2, 3, and 5 A g −1 are 158, 125, and 92 F g −1 , respectively. The D‐graphene supercapacitor electrode offers high ‘C s ’ than that of some of the recently reported supercapacitors . As exhibited in Figure g, the Ragone plot of the D‐graphene supercapacitor electrode at three different current densities offered the highest ‘E’ of 22 Wh kg −1 and ‘P’ of 500 W kg −1 .…”

Section: Resultsmentioning

confidence: 99%

A Novel Strategy for Sustainable Synthesis of Soluble‐Graphene by a Herb Delphinium denudatum Root Extract for Use as Light‐Weight Supercapacitors

et al. 2020

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Synthesis of high‐quality graphene nanosheets under eco‐friendly strategies is of enormous interest today hence graphene‐based materials offer unique advantages in a wide range of applications including light‐weight supercapacitors. The reduction of graphene oxide (GO) by chemical reagents frequently involves hazardous reductants that are also dangerous to humans. In view of sustainability, we develop a facile and green procedure to synthesize soluble‐graphene by reducing the GO in delphinium root extraction for the first time. The reducing property of organic compounds that exist in the aqueous delphinium root extract may be accountable for the reduction of exfoliated GO to D‐graphene under reflux condition. The efficient elimination of oxygen functionalities from GO was verified by powder X‐ray diffraction (PXRD), UV‐Visible spectroscopy (UV‐Vis), Fourier transform infrared (FT‐IR), and X‐ray photoelectron spectroscopy (XPS) studies. Atomic force microscopy (AFM) and transmission electron microscopy (TEM) studies indicate the successful development of few‐layer graphene. The electrochemical activities are delivered by cyclic voltammetry (CV) and galvanic charge‐discharge (GCD) studies. This uniquely‐synthesized D‐graphene electrode offers superior electrochemical performance at 2 A g−1 with an utmost specific capacitance (Cs) of 158 F g−1 and high energy density (E) of 22 Wh Kg−1. Taking the above remarkable results, the characteristics of eco‐friendly, easy synthesis and cheap endow this green approach as a promising avenue for the exploitation of graphene‐based materials in numerous applications, particularly for graphene‐based light‐weight supercapacitors.

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Highly porous carbon nanofibers co-doped with fluorine and nitrogen for outstanding supercapacitor performance

Abstract: One-dimensional nitrogen and fluorine co-doped mesoporous carbon nanofibers (NFMCNFs) were fabricated for energy storage electrodes with high specific capacitance and long-term cycle stability.

Cited by 180 publications

References 50 publications

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

Carbon Nanoarrays Embedded with Metal Compounds for High‐Performance Flexible Supercapacitors

A Facile Synthesis of Nitrogen‐Doped Porous Carbon Materials for High‐Performance Supercapacitors

A Novel Strategy for Sustainable Synthesis of Soluble‐Graphene by a Herb Delphinium denudatum Root Extract for Use as Light‐Weight Supercapacitors

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