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Title of Paper:Magnetoelectric Synergy-Mediated Impedance Tuning in Ni/SiC Carbon Nanofibers for Multiband Electromagnetic Wave Absorption

Journal:Colloids and Surfaces A: Physicochemical and Engineering Aspects

Place of Publication:Elsevier

Key Words:electromagnetic wave absorption; carbon nanofibers; impedance matching; magnetic/dielectric synergy; 3D network

Summary:One-dimensional carbon nanomaterials have shown great promise as electromagnetic wave (EMW) absorbers, yet their practical application is often hindered by impedance mismatch and dielectric/magnetic loss capabilities. To overcome these limitations, this study presents an innovative LC-circuit-inspired structural design, in which self-doped carbon nanofibers (CNFs) are integrated with magnetic nickel (Ni) and dielectric silicon carbide (SiC) nanoparticles via electrospinning. By systematically tuning the Ni/SiC mass ratio within the CNF matrix, we optimized impedance matching and enhanced dynamic balance between magnetic permeability and dielectric constant through magnetic–dielectric synergy. The optimized composite with a Ni:SiC ratio of 1:1 (Ni/SiC CNFs-2) exhibits excellent microwave absorption characteristics, attributed to an LC-circuit synergy between magnetic and dielectric components, it achieves balanced magnetic dielectric losses and optimal impedance matching characteristics. The diverse defects induced by controlled graphitization and the nitrogen-doped defects in CNFs lead to charge accumulation, which further exacerbates dielectric loss through resulting dipole polarization. Remarkably, Ni/SiC CNFs-2 achieves a minimum reflection loss of -42.37 dB at 3.81 GHz, with effective absorption bands covering 3.29–4.40 GHz and 11.88–12.99 GHz. This work highlights the broad applicability of LC-circuit-inspired structural engineering for developing high-performance EMW absorbing materials.

First Author:Hongsheng Li

Correspondence Author:Zuoli He

All the Authors:Yanfu Zhou,Aimin Wu,Hao Huang,Youshi Zhang

Document Code:141527

Discipline:Engineering

First-Level Discipline:Environmental Science and Engineering

Document Type:J

Volume:750

Issue:Part 2

Page Number:141527

DOI Number:10.1016/j.colsurfa.2026.141527

Number of Words:6000

Translation or Not:No

Date of Publication:2026-08

Links to Published Journals:https://www.sciencedirect.com/science/article/pii/S0927775726020674?via%3Dihub#fig0045

Release Time:2026-08-11