Hard template–salt template double template preparation of heteroatom-doped hierarchical porous carbon and its electrochemical properties

RSC Advances, Journal Year: 2025, Volume and Issue: 15(4), P. 2582 - 2590

Published: Jan. 1, 2025

Heteroatom-doped hierarchical porous carbon (AF-MMTC) was prepared with hard template and salt dual templating agents, the synergistically construct pore structures at different scales.

Language: Английский

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Bio-Based Carbon Materials for High-Performance Supercapacitors

Nanomaterials, Journal Year: 2022, Volume and Issue: 12(17), P. 2931 - 2931

Published: Aug. 25, 2022

Lignin, one of the components natural plant biomass, is a rich source carbon and has excellent potential as valuable, sustainable material. Low-cost lignosulfonate (LS) doped with polyaniline (PANI) been used precursor to produce porous carbon. LS highly dispersed sparse microstructure can be accidentally S atoms. N double-doped directly synthesized abundant mesopores high surface area in lamellar network using PANI another doping source. This study explored optimal conditions LS/PANI material different amounts carbonization temperatures. When amount was 4 g temperature 700 °C, graded obtained, electrochemical performance best. At 0.5 A/g, specific capacitance reached 333.50 F/g (three-electrode system) 242.20 (two-electrode system). After 5000 charge/discharge cycles at 5 maintained good cycling stability achieved retention rate 95.14% 97.04% The energy power densities SNC700 samples were 8.33 Wh/kg 62.5 W/kg 0.25 respectively, values that meet requirements today's commercially available supercapacitor electrode materials, further demonstrating their practicality. paper provides an efficient double-doping method prepare layered structures. Porous for storage devices.

Language: Английский

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Balancing the gravimetric and volumetric capacitance of nitrogen-enriched lignin porous carbon for high performance supercapacitors

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 63, P. 106947 - 106947

Published: March 18, 2023

Language: Английский

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Explosion Strategy Engineering Oxygen-Functionalized Groups and Enlarged Interlayer Spacing of the Carbon Anode for Enhanced Lithium Storage

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(3), P. 4371 - 4384

Published: Jan. 12, 2023

Amorphous carbon monoliths with tunable microstructures are candidate anodes for future lithium-based energy storage. Enhancing lithium storage capability and solid-state diffusion kinetics the precondition practical applications. Transforming intrinsic oxygen-rich defects into active sites engineering enlarged interlayer spacing of great importance. Herein, a novel explosion strategy is designed based on oxalate pyrolysis producing CO CO2 to successfully prepare lignin-derived monolith (LSCM) carbonyl (C═O) groups spacing. Explosion promotes demethylation methoxyl cleavage carboxyl form C═O groups. etches atoms in short time improve heteroatom level, expanding ZnC2O4 decomposed at 400 °C, simultaneously CO2, which constructs less large MgC2O4 450 480 staged-weakly more larger CaC2O4 700 staged-uniformly abundant largest The LSCM prepared by staged-uniform exhibits high capacity, superior rate capability, cycling performance. assembled ion capacitor device achieves excellent energy/power densities 78 Wh kg-1/100 W kg-1 durability (capacitance retention 8 4.6% after 20,000 cycles). This work gives insight engineer advanced oxygen-functionalized carbons enhanced

Language: Английский

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Lignin hydrogel-derived hierarchical porous carbon materials using low dosage of alkaline activation agents for high-performance zinc-ion hybrid supercapacitors

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 92, P. 112191 - 112191

Published: May 23, 2024

Language: Английский

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