Construction of Fe- and N-Doped Microporous Carbon from Ferrocene-Based Conjugated Microporous Polymers for Supercapacitive Energy Storage

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

Published: Feb. 6, 2025

The rising interest in conjugated microporous polymers (CMPs) as prospective electrode materials for supercapacitors (SCs) has been dampened by numerous obstacles. Many CMPs exhibit poor conductivity and substandard electrochemical properties, limiting their practical applications. In response to these issues, we successfully synthesized Fe- N-doped carbon-based from Py-BZFC-CMP Py-PHFC-CMP through calcination potassium hydroxide (KOH) activation at 800 °C. resulting carbons, designated Py-BZFC-CMP-800 Py-PHFC-CMP-800, demonstrated excellent attributes, including outstanding thermal stability with a Td10 up 732 °C, impressive char yields reaching 87 wt %. Furthermore, exhibited large surface areas, peaking 376 m2 g–1, significant total pore volume (PVtotal) of 0.36 cm3 g–1. One remarkable material, produced KOH exceptional performance. It achieved specific capacitance 324 F g–1 0.5 A rivaling some the highest performing porous carbon reported date. Py-PHFC-CMP-800 cycling stability, retaining 86% its after 5000 charge–discharge cycles 10 This project offers advancement field CMP-based showcasing how rational precursor design pyrolysis can lead creation high-performance carbons. Fe heteroatom doping approach enhances functionality opens possibilities owing use valuable application, efficient energy storage systems.

Language: Английский

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Constructing N, B co-doped carbon nanosheets with pyridine N–B sites for boosting sodium-ion storage

The Journal of Chemical Physics, Journal Year: 2025, Volume and Issue: 162(7)

Published: Feb. 18, 2025

Carbonaceous materials have demonstrated extensive potential as anodes for sodium ion batteries (SIBs). Nevertheless, large-scale commercial use is severely hampered by the slow reaction kinetics and rapid capacity fading. Heteroatom doping can create abundant active sites to improve adsorption properties of carbon materials. Here, we report a novel nitrogen/boron co-doped nanosheet (NB-CN) with N–B bonds efficient Na+ storage. B-doped MIL-68 precursor not only achieve uniform B but also serve nitrogen site form bonds. N, co-doping could promote improved hydrophilicity, while 2D porous structure accelerate transfer kinetics. Benefitting from synergistic effect dual-doping hierarchical porosity, NB-CN shows storage performance, displays high 307.1 mA h g−1 in SIBs at 0.1 A g−1, still has reversible 157 4 after 8000 cycles. Moreover, assembled NB-CNs//Na3V2(PO4)3/C full cell exhibits application prospect. This work provides an insight designing dual-doped high-performance SIBs.

Language: Английский

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Disulfide Bonds Reinforced Self‐Assembly of Cellulosic Wastes Toward N/S‐Enriched 3D Carbon Foams with Starfish‐Like Networks for High‐Performance Supercapacitors

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Abstract Developing high‐performance electrodes derived from cellulosic wastes is an effective strategy for promoting large‐scale energy storage and achieving carbon neutrality, yet how to enhance capacitive activity the perspective of surface‐interface structure regulation remains a challenge. Herein, disulfide bond reinforced self‐assembly demostrated fabricate 3D foams with thiram bio‐straws as examples. The cellulose‐enriched piths straws (EP) are impregnated solution followed by pyrolysis, where can form stable cross‐linked networks via disulfide‐centered hydrogen bonds EP thiram, endowing obtained starfish‐like skeleton connected high N/S contents hierarchical porous structure. Consequently, resultant EPCF‐800 binder‐free conductive agent‐free electrode achieves ultrahigh specific capacitance 342 F g −1 in aqueous electrolyte at 0.5 A , meanwhile, DFT calculations reveal that high‐level N/S‐doping effectively weaken adsorption barriers K‐ions. Moreover, assembles flexible solid‐state supercapacitors delivering density 30.11 Wh kg long cycle‐life. This work will shed light on value‐added utilization engineering molecular chemical pave way fabricating supercapacitors.

Language: Английский

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Multitrack Boosted Hard Carbon Anodes: Innovative Paths and Advanced Performances in Sodium‐Ion Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Sodium‐ion batteries (SIBs) are emerging as a potential alternative to traditional lithium‐ion due the abundant sodium resources. Carbon anodes, with their stable structure, wide availability, low cost, excellent conductivity, and tunable morphology pore exhibit outstanding performance in SIBs. This review summarizes research progress of hard carbon anodes SIBs, emphasizing innovative paths advanced performances achieved through multitrack optimization, including dimensional engineering, heteroatom doping, microstructural tailoring. Each dimension material—0D, 1D, 2D, 3D—offers unique advantages: 0D materials ensure uniform dispersion, 1D have short Na + diffusion paths, 2D possess large specific surface areas, 3D provide e − /Na conductive networks. Heteroatom doping elements such N, S, P can tune electronic distribution, expand interlayer spacing carbon, induce Fermi level shifts, thereby enhancing storage capability. In addition, defect engineering improves electrochemical by modifying graphitic crystal structure. Furthermore, suitable structure design, particularly closed structures, increase capacity, minimizes side reactions, suppress degradation. future studies, optimizing exploring co‐doping, developing environmentally friendly, low‐cost anode methods will drive application high‐performance long cycle life

Language: Английский

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Rational Design Strategy for the Synthesis of Hyper-Cross-Linked Polymers Using Dipolar π-Systems and Proton Sorption Induced Pseudocapacitance

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

Published: March 20, 2025

Language: Английский

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Regulation of gradient pores and heteroatom-doped sites in carbonaceous cathodes for promoting Zn-ion storage capability

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 644, P. 237072 - 237072

Published: April 22, 2025

Language: Английский

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Biomass-derived nitrogen-doped porous carbon as a sustainable flow-electrode material for enhanced capacitive deionization

Chinese Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

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Recovery of organic materials from waste activated sludge for the rapid synthesis of N-doped hierarchical porous carbon as supercapacitor electrodes

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 384, P. 125582 - 125582

Published: May 1, 2025

Language: Английский

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Hierarchical nanostructures of Co(OH)2 on electrospun NiMoO4 nanofibers: Controllable hydrothermal-fabrication and enhanced supercapacitor performance

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177580 - 177580

Published: Nov. 14, 2024

Language: Английский

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