物理化学学报 >> 2026, Vol. 42 >> Issue (7): 100275.doi: 10.1016/j.actphy.2026.100275

论文 上一篇    下一篇

高性能电磁吸收与隔热用界面工程化Mo2C MXenes

刘东芳1, 兰笛2, 尹言泽1, 孔俊儒1, 孟彦宏1, 刘艳1,*(), 仇亚茹3,*(), 夏国飞4, 刘冬1,*()   

  1. 1 山东理工大学化学化工学院, 山东 淄博 255049
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
    3 菏泽医学专科学校药学和检验医学系, 山东 菏泽 274000
    4 龙腾照明集团股份有限公司, 江苏 扬州 225600
  • 收稿日期:2026-02-05 修回日期:2026-02-28 录用日期:2026-03-02 发布日期:2026-05-22
  • 通讯作者: Email: liuyan@sdut.edu.cn (刘艳)qiuyaru1@163.com (仇亚茹)liu_dong@sdut.edu.cn (刘冬)

Interface engineered Mo2C high-performance electromagnetic absorption and thermal insulation

Dongfang Liu1, Di Lan2, Yanze Yin1, Junru Kong1, Yanhong Meng1, Yan Liu1,*(), Yaru Qiu3,*(), Guofei Xia4, Dong Liu1,*()   

  1. 1 School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong Province, China
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
    3 Department of Pharmacy and Laboratory Medicine, Heze Medical College, Heze 274000, Shandong Province, China
    4 Longt Lighting Group Inc, Yangzhou 225600, Jiangsu Province, China
  • Received:2026-02-05 Revised:2026-02-28 Accepted:2026-03-02 Published:2026-05-22
  • Contact: Email: liuyan@sdut.edu.cn (Yan Liu)qiuyaru1@163.com (Yaru Qiu)liu_dong@sdut.edu.cn (Dong Liu)

RichHTML

10

PDF

283

赞

补充材料

1

摘要：

电磁污染问题的日益严重，亟需开发兼具高效吸波与热管理功能的多功能材料。本研究报道了一种基于界面工程化Mo2C MXenes的双功能设计。通过熔盐刻蚀策略，金属离子(Cu/Fe)被原位掺杂到Mo2C中，构建的异质结构显著增强了界面极化与缺陷诱导偶极弛豫。优化后的Mo2C/Fe复合材料展现出卓越的吸波性能，在2.0 mm厚度下实现−41.8 dB的反射损耗及5.12 GHz的宽频带吸收。这种增强效应归因于优化的阻抗匹配与多尺度极化损耗机制的协同作用。此外，所制备的Mo2C/Fe气凝胶具有超低密度(0.0235 g cm−3)和优异隔热性能(80 ℃时ΔT < 20 ℃)，在中性环境中表现出卓越的耐腐蚀性。本工作为先进MXene基复合材料开发了一种可行的设计策略，展示了其在高效电磁吸收与有效热绝缘方面的双重功能。

关键词: MXene, 熔盐蚀刻, 界面极化, 电磁吸收

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.

Key words: MXene, Molten-salt etching, Interfacial polarization, Electromagnetic absorption