Heteroatom-doped lignin derived carbon materials for improved electrochemical performance: synthesis, mechanism, and applications in advanced supercapacitors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154829 - 154829

Published: Aug. 13, 2024

Language: Английский

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Thiocyanogen-modulated N, S Co-doped lignin hierarchical porous carbons for high-performance aqueous supercapacitors

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 667, P. 147 - 156

Published: April 16, 2024

Language: Английский

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Mechanochemically Assisted Microwave-Induced Plasma Synthesis of a N-Doped Graphitic Porous Carbon-Based Aqueous Symmetric Supercapacitor with Ultrahigh Volumetric Capacitance and Energy Density

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 6(2), P. 1140 - 1150

Published: Jan. 19, 2024

In the realm of affordable and yet efficient energy storage devices required for future portable electronic gadgets electric vehicles, supercapacitors (SCs) have immense potential; however, prime bottleneck is low volumetric capacitance density caused by sluggish reaction kinetics a limited potential window (<1.2 V) in aqueous electrolytes. Therefore, to address this challenge, we aim design suitable biomass-derived nitrogen (N)-doped highly porous graphitic carbon (HP-NGC) via mechanochemically assisted microwave plasma-induced quick synthesis process deliver high density. Detailed characterization developed electrode materials revealed that structural functional properties are influenced crucial role mechanochemical treatment carried out just before carbonization through irradiation under N2 plasma. HP-NGC produces an almost 32% higher surface area (820 m2 g–1) than (620 N-doped (NGC) prepared without treatment. Moreover, shows more N doping (IDIG∼1.01) NGC (where 1.1 atom % IDIG ∼0.98), which significantly affects their electrochemical properties. The exhibited ∼145% (840 F cm–3) (168 Wh L–1) (308 (61.5 within wide 1.2 V measured at 0.5 A g–1 6 M KOH. Finally, assembled symmetric device (HP-NGC//HP-NGC) made electrodes exhibits 630 cm–3 with excellent rate performance (∼81% retained even after increasing current 10 times), high-energy 32 L–1, power 640 W L–1 g–1, those many reported carbon-based devices, making it promising candidate commercial applications.

Language: Английский

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Fe3C and Fe3O4 decorated porous carbon as high volumetric capacitance/rate electrodes for supercapacitor

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 48, P. 104362 - 104362

Published: April 15, 2024

Language: Английский

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N/O/P Co-Doped Highly Microporous Carbons with Optimized Volumetric and Gravimetric Supercapacitive Performance

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

The practical application of supercapacitors necessitates both high volumetric and gravimetric performance. However, carbon materials with performance often contain significant meso- macropores, which detrimentally affect their Herein, we developed a facile homogeneous activation technique for the preparation N/O/P co-doped highly microporous carbons (P@CSX). Utilizing P2O5 as activator, simultaneously achieved micropore construction uniform co-doping. optimized material, P@CS7, demonstrated an impressive ratio 85.5%, specific surface area up to 918 m2 g–1, notable compaction density 1.34 g cm–3. These attributes facilitated balance between capacitance (210 F g–1) (281 cm–3) at 0.2 A g–1. assembled symmetrical supercapacitor device exhibited remarkable energy 21.2 W h L–1 power 361.8 (15.8 kg–1 270 kg–1) maintained 13.53 7.24 kW (10.1 5.4 kg–1). This work offers promising strategy designing that achieve supercapacitive

Language: Английский

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Spongy porous carbon nanosheets obtained by one-step oxidation-activation of asphalt with KHC2O4 activator: Application in the cathode of zinc storage devices

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 909, P. 168519 - 168519

Published: Nov. 13, 2023

Language: Английский

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Unveiling drastic influence of cross-interactions in hydrothermal carbonization of spirulina with cellulose, lignin or poplar on nature of hydrochar and activated carbon

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 366, P. 121713 - 121713

Published: July 9, 2024

Language: Английский

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Renewable biomass bougainvillea petals-derived porous carbon through KOH activation and B/N co-doping: Synergistic contribution and charge storage mechanism

Applied Surface Science, Journal Year: 2024, Volume and Issue: 672, P. 160852 - 160852

Published: July 28, 2024

Language: Английский

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SiO_x Encapsulated into Nitrogen-Enriched Lignin Porous Carbon for Fast Lithium Storage

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

The low-cost and high-capacity SiOx is widely recognized as an ideal anode material for lithium storage; however, the challenges of low conductivity significant volume expansion still need to be addressed. In this work, we incorporated into a lignin-derived carbon with elevated nitrogen content through step-by-step carbonization strategy. Initially, electrostatic assembly facilitated formation complex comprising modified lignin SiO2, which was subsequently subjected etching steps. Finally, due zinc species inhibiting decomposition, cocarbonization porous carbon/SiOx complex, oxalate, melamine enabled construction nitrogen-enriched composite. resulting composite exhibited moderate specific surface area, abundant mesoporous channels, exceptionally high doping 17.91 at. %. These characteristics effectively enhanced storage transportation ions while mitigating expansion. As anodes in half batteries, reversible capacity optimized reached 894 mAh/g during stable cycles, attributed ion diffusion rate kinetics from well improved structural stability encapsulated structure. Furthermore, assembled lithium-ion capacitor demonstrated energy density 82 Wh/kg maintained retention 93.1% after undergoing 15,000 cycles. This work presents novel concept synthesis nitrogen-rich matrixes but also offers insights optimization silicon-based negative electrodes using green biomass.

Language: Английский

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Study on the transformative characteristics of mesophase asphalt formation and the electrochemical performance of its derived porous carbon

Fuel, Journal Year: 2025, Volume and Issue: 387, P. 134396 - 134396

Published: Jan. 20, 2025

Language: Английский

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