Citation: Dongfang Liu, Di Lan, Yanze Yin, Junru Kong, Yanhong Meng, Yan Liu, Yaru Qiu, Guofei Xia, Dong Liu. Interface engineered Mo₂C high-performance electromagnetic absorption and thermal insulation[J]. Acta Physico-Chimica Sinica, ;2026, 42(7): 100275. doi: 10.1016/j.actphy.2026.100275 shu

Interface engineered Mo₂C high-performance electromagnetic absorption and thermal insulation

Dongfang Liu ¹ ,
Di Lan ¹ ,
Yanze Yin ¹ ,
Junru Kong ¹ ,
Yanhong Meng ¹ ,
Yan Liu ^1,, ,
Yaru Qiu ^3,, ,
Guofei Xia ⁴ ,
Dong Liu ^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

Corresponding author: Yan Liu, Yaru Qiu, Dong Liu,
Received Date: 5 February 2026
Revised Date: 28 February 2026
Accepted Date: 2 March 2026

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 °C at 80 °C), 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.
- MXene,
- Molten-salt etching,
- Interfacial polarization,
- Electromagnetic absorption
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Interface engineered Mo2C high-performance electromagnetic absorption and thermal insulation

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通讯作者: 陈斌, bchen63@163.com

Interface engineered Mo₂C high-performance electromagnetic absorption and thermal insulation