Nitrogen-doped cornstalk-based biomass porous carbon with uniform hierarchical pores for high-performance symmetric supercapacitors

Yue, Xiandong; Yang, Haixia; Cao, Yang; Jiang, Lihang; Li, Haokun; Shi, Fei; Liu, Jingxiao

doi:10.1007/s10853-022-06891-9

Cited by 34 publications

(15 citation statements)

References 55 publications

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“…Such a high defect was introduced during chemical activation using KOH and heteroatom doping. [5] Figure S1b, Supporting Information, shows the Raman spectrum recorded for the NSTC-S composite, which has shifts corresponding to the sulfur and disordered carbon which validate the aforementioned XRD results. [21] The FTIR spectra of the TC-800 and the NSTC-800 samples shown in Figure 2c have bands present at 3429, 1635, and 1380 cm À1 which are ascribed to OH/N-H stretching vibrations, C═C, and C-OH in the sample, respectively.…”

Section: Resultssupporting

confidence: 74%

“…For example, Yue et al, synthesized nitrogen‐doped cornstalk‐activated carbon (NCSAC) by means of high‐temperature calcination which resulted in high capacitance. [ 5 ] Similar work was done by Chen et al, where nitrogen‐doped activated carbon was derived from the shaddock peel that exhibited good specific capacitance and stability. [ 6 ] Nitrogen doping results in enhanced conductivity, while sulfur doping imposes strain effect, alters electron density due to the larger size of the sulfur atom, and results in CS bond polarization.…”

Section: Introductionmentioning

confidence: 79%

“…[ 19 ] Interestingly, the width of the (002) and (100) diffraction peaks of the NSTC‐800 sample are significantly wider than those of the TC‐800 sample, owing to presence of defects created by N, S codoping. [ 5 ] Significantly, the appearance of the characteristic Bragg peaks of sulfur in the XRD pattern of the NSTC‐S composite is shown in the supplementary data. Figure S1a, Supporting Information, clearly implies the incorporation of sulfur into the carbon matrix.…”

Section: Resultsmentioning

confidence: 99%

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N, S Codoping and Mesoporous‐Induced Capacitive Storage Enhancement in Supercapacitor and Improved Li–S Battery Performances of Polystyrene Waste‐Derived Carbon Electrode

2022

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The accumulation of solid polymer wastes stifles society's sustainable growth. Herein, N-, S-codoped polystyrene (thermocol) waste-derived carbon is synthesized using a simple approach and utilized as an electrode for a lithiumsulfur battery and supercapacitor applications. The aqueous symmetric supercapacitor delivers a high specific energy of 60 and 27 Wh kg À1 at a specific power of 75 and 3780 W kg À1 , respectively and 150 Wh kg À1 at a specific power of 520 W kg À1 in nonaqueous sodium-ion capacitors with high cycling stability. Deconvolution by Dunn's and Trasatti's approaches reveals an enhanced capacitive-charge storage rather than diffusive-charge storage due to heteroatom doping and mesopores of the generated carbon. The lithium-sulfur battery delivers a stable capacity of 1079 mAh g À1 at 0.1C rate with excellent cycling stability over 500 cycles, suggesting improved mitigation of polysulfide dissolution imparted by the mesoporous carbon with thiophene moiety which effectively traps Li 2 S n .

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Section: Resultssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

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N, S Codoping and Mesoporous‐Induced Capacitive Storage Enhancement in Supercapacitor and Improved Li–S Battery Performances of Polystyrene Waste‐Derived Carbon Electrode

2022

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“…25 The incorporation of oxygen-functional groups in carbon materials has been shown to improve their hydrophilic behavior, allowing for their high specific surface area to be fully utilized and enhancing their Table 1 Surface area and pore structure parameters of RT-s Sample S BET (m 2 g À1 ) S mic (m 2 g À1 ) V total (cm 3 g À1 ) V mic (cm 3 energy storage capacity. 26 In addition, the high-resolution N1s spectrum of RTK-3 can be deconvoluted into four peaks at 398.7, 400.1, 401.4, and 402.6 eV, corresponding to N-6, N-5, N-Q, and N-X, respectively. 27 N-6 and N-5 are localized at the edge or defect sites of graphene and exhibit sp 2 hybridization, allowing for the donation of lone pair electrons to adjacent C atoms, promoting the chemical activity of neighboring C atoms.…”

Section: (B) and (F)mentioning

confidence: 99%

Three-dimensional honeycomb-like hierarchically structured carbon nanosheets from resin for high-performance supercapacitors

Guo,

Liu,

et al. 2023

New J. Chem.

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“…Several studies have been completed on the utilization of corn derivatives such as corn husks, corn cobs, − corn stalks, corn grains, and corn stover for producing high-SSA activated carbons for supercapacitor electrodes, as shown in Table . For instance, Yu et al pyrolyzed corn stalk cores to produce high-SSA activated carbon (2350 m 2 g –1 ), which showed a specific capacitance of 140 F g –1 at 1 A g –1 in an aqueous electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Utilization from Corn Derivatives for High-Energy-Density Flexible Supercapacitors

Reddygunta,

Beresford,

Šiller

et al. 2023

Energy Fuels

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Porous activated carbons from four types of corn derivatives (husk, fiber, grain, and cob) are compared for the first time regarding their structural, morphological, and electrochemical characteristics for application as electrode materials in flexible supercapacitors. Benefiting from its hierarchical porous structure, appropriate amount of N and O functional groups, large specific surface area (1804 m 2 g –1 ), and high degree of graphitization, the activated carbon from corn grains displayed the best electrochemical performance as an electrode material for supercapacitor applications; when tested in a three-electrode configuration, it had a high specific capacitance (411 F g –1 at 1.0 A g –1 ) and an excellent rate capacity (85.7% capacitance retention at 30 A g –1 ) in an aqueous 6 M KOH electrolyte. The high specific surface area and high degree of graphitization of the activated carbon from corn grains (AC grain) played crucial roles in its excellent energy storage performance. Most importantly, the flexible supercapacitor that was assembled with slot-die coated AC grain electrodes and a hydroxyethyl cellulose (HEC)/KOH biopolymer electrolyte delivered an outstanding electrochemical performance with an energy density of 31.1 Wh kg –1 at 215 W kg –1 and ultrahigh cyclic stability (91.3% capacitance retention after 10 000 cycles at a current density of 5 A g –1 ). Also, the assembled flexible supercapacitor maintained an energy density of 20.03 Wh kg –1 even under a high power density of 28.01 kW kg –1 . These findings conclude that the porous carbon material obtained from corn grains has enormous potential as a high-performance electrode material for supercapacitors.

show abstract

Nitrogen-doped cornstalk-based biomass porous carbon with uniform hierarchical pores for high-performance symmetric supercapacitors

Cited by 34 publications

References 55 publications

N, S Codoping and Mesoporous‐Induced Capacitive Storage Enhancement in Supercapacitor and Improved Li–S Battery Performances of Polystyrene Waste‐Derived Carbon Electrode

N, S Codoping and Mesoporous‐Induced Capacitive Storage Enhancement in Supercapacitor and Improved Li–S Battery Performances of Polystyrene Waste‐Derived Carbon Electrode

Three-dimensional honeycomb-like hierarchically structured carbon nanosheets from resin for high-performance supercapacitors

Activated Carbon Utilization from Corn Derivatives for High-Energy-Density Flexible Supercapacitors

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