物理化学学报2026，Vol.42Issue(7)：185-196,12.DOI:10.1016/j.actphy.2026.100275
高性能电磁吸收与隔热用界面工程化Mo2C MXenes
Interface engineered Mo2C high-performance electromagnetic absorption and thermal insulation
摘要
Abstract
The escalating issue of electromagnetic(EM)pollution necessitates the development of multifunctional materials integrating efficient absorption with thermal management.Herein,we report a dual-functional design based on interface-engineered Mo2C MXenes.Through a molten-salt etching strategy,metal ions(Cu/Fe)were in situ doped into Mo2C,constructing heterostructures that significantly enhance interfacial polarization and defect-induced dipole relaxation.The optimized Mo2C/Fe composite demonstrates exceptional EM absorption performance,achieving the reflection loss of-41.8 dB at 2.0 mm with a broad bandwidth of 5.12 GHz.This enhancement is attributed to the synergistic effect of optimized impedance matching and multi-scale polarization loss mechanisms.Furthermore,the derived Mo2C/Fe aerogel exhibits ultralow density(0.0235 g cm-3)and outstanding thermal insulation(ΔT<20 ℃ at 80 ℃),exhibiting superior corrosion resistance in neutral environments.This work develops a viable design strategy for advanced MXene-based composites,demonstrating their dual functionality in efficient EM absorption and effective thermal insulation.关键词
MXene/熔盐蚀刻/界面极化/电磁吸收Key words
MXene/Molten-salt etching/Interfacial polarization/Electromagnetic absorption分类
化学化工引用本文复制引用
刘东芳,兰笛,尹言泽,孔俊儒,孟彦宏,刘艳,仇亚茹,夏国飞,刘冬..高性能电磁吸收与隔热用界面工程化Mo2C MXenes[J].物理化学学报,2026,42(7):185-196,12.基金项目
本研究得到国家自然科学基金(22301168) （22301168）
山东省自然科学基金(ZR2024QB326)及山东省科技型中小企业创新能力提升工程(2025TSGCCZZB0350)的资助 （ZR2024QB326）
