Nitrogen-doped microporous carbon with high CO<sub>2</sub> sorption by KOH activation of black gram

Chithra, A.; Wilson, Praveen; Ramanan, Rajeev; Prabhakaran, K.

doi:10.1088/2053-1591/aade26

Cited by 6 publications

(1 citation statement)

References 41 publications

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“…Deconvolution of N 1s spectra revealed three types of nitrogens at the surfaces of carbon samples (Figure c). The signal at ∼ 398.0 eV is assigned to pyridinic nitrogen (N-6), that at ∼400.2 eV is due to graphitic N (N-4), and the peak at ∼403.7 eV is attributed to N -oxide (N-X). − For PAM 4 -HPC-K500, some pyrrolic nitrogen (N-5) indicated by the peak at 399.8 eV could also be observed. Further increasing the temperature of carbonization leads to the emergence of graphitic nitrogen (N-4) as the prevalent form, which contributes positively to the electrical conductivity of the supercapacitor electrode.…”

Section: Resultsmentioning

confidence: 99%

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Velychkivska,

Golunova,

Panda

et al. 2024

ACS Appl. Energy Mater.

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High surface area, hierarchically micro/mesoporous carbon materials with interconnected pore structures have significant potential as electrode materials for high-performance supercapacitor applications. Here, we present the synthesis of ultrahigh surface area hierarchically porous carbon materials, prepared by potassium carbonate (K 2 CO 3 ) activation of polyacrylamide−hydroxy propyl cellulose (PAM−HPC) hydrogel at high temperatures (500−900 °C), and their energy storage performances in two-and threeelectrode cell setup. The carbon material obtained by carbonization of the PAM−HPC hydrogel at 800 °C exhibits an ultrahigh surface area of 3387.2 m 2 g −1 with a large pore volume of 1.963 cm 3 g −1 . The electrode prepared using this material demonstrated excellent supercapacitance performance in the three-electrode system, achieving a high specific capacitance of 545.5 F g −1 at 1 A g −1 current density with superior rate capability and an outstanding cycling stability of 96.3% after 5000 charge−discharge cycles. Furthermore, the assembled symmetric supercapacitor device constructed by using this material showed a high specific capacitance of 102.5 F g −1 at 0.5 A g −1 . It delivers a high energy density of 17.2 W h kg −1 at the power density of 550 W kg −1 , and a superior cycling stability of 94.2% after 5000 consecutive charge−discharge cycles. The electrochemical properties reported here indicate that hierarchically porous carbons obtained from PAM−HPC hydrogels are promising materials for high-performance supercapacitor applications.

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Section: Resultsmentioning

confidence: 99%

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Velychkivska,

Golunova,

Panda

et al. 2024

ACS Appl. Energy Mater.

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Production and applications of N-doped carbons from bioresources: A review

Mainali,

Mood,

Pelaez-Samaniego

et al. 2023

Catalysis Today

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Waste-derived carbon nanostructures (WD-CNs): An innovative step toward waste to treasury

Omar,

Talreja,

Chuhan

et al. 2024

Environmental Research

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Nitrogen-doped microporous carbon with high CO₂ sorption by KOH activation of black gram

Cited by 6 publications

References 41 publications

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Production and applications of N-doped carbons from bioresources: A review

Waste-derived carbon nanostructures (WD-CNs): An innovative step toward waste to treasury

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Nitrogen-doped microporous carbon with high CO2 sorption by KOH activation of black gram

Cited by 6 publications

References 41 publications

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Ultrahigh Surface Area Hierarchically Porous Carbon Materials from Polyacrylamide–Cellulose Hydrogel for High-Performance Supercapacitors

Production and applications of N-doped carbons from bioresources: A review

Waste-derived carbon nanostructures (WD-CNs): An innovative step toward waste to treasury

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Nitrogen-doped microporous carbon with high CO₂ sorption by KOH activation of black gram