Rational Design of Three-Dimensional Architectures of Carbon Nanorods/Carbon Nanofibers Composite for High-Performance Supercapacitors

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

Published: Jan. 16, 2025

Carbon nanofibers (CNFs) have important application potential in the field of supercapacitors; however, relatively low specific surface area often leads to a capacitance. Herein, N-doped carbon nanofibers/carbon nanorods (CNFs/CNRs-N) composite with an N-doping level up 8.9 atom % is designed, which shows excellent supercapacitor energy storage performance. CNFs/CNRs-N has three-dimensional porous structure, large area, and huge number active sites. Based on synergy various unique properties CNFs/CNRs-N, when used as electrode material, it capacitance value 595 F g–1.

Language: Английский

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Biomass-derived activated carbon for high-performance energy storage devices

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236404 - 236404

Published: Feb. 12, 2025

Language: Английский

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Biomass-Derived Activated Porous Carbon from Foxtail Millet Husk to Utilizing High-Performance Symmetric Supercapacitor Applications

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(8), P. 575 - 575

Published: April 10, 2025

This study successfully demonstrates the synthesis of foxtail millet carbon-activated (FMCA) materials using a two-step carbonization process from husk (FMH). The pre-carbonized biomass-derived was chemically activated with KOH at 500 °C and subsequently carbonized in an inert argon atmosphere 800 tubular furnace. XRD analysis revealed diffraction peak 2θ = 23.67°, corresponding to (002) plane, indicating presence graphitic structures. Raman FMCA showed intensity ratio (IG/ID) 1.13, signifying enhanced ordering structural stability. as-prepared FMC electrode demonstrate efficient charge storage electrochemical symmetric devices. Electrochemical charge-discharge curves specific capacitance Csp (FMC//FMC) 55.47 F/g (FMCA//FMCA) 82.94 0.5 A/g. Additionally, FMCA//FMCA device exhibits superior performance higher capacity retention 94.89% over 5000 cycles. results confirm suitability for energy applications, particularly double-layer capacitors (EDLCs), making it promising material next-generation supercapacitors.

Language: Английский

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Dual-Activation Engineering with Molten Salt and KOH: Transforming Waste Fine Coke into Ultrahigh Capacitive Carbon for Supercapacitors

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

Published: April 28, 2025

Language: Английский

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