物理化学学报 >> 2026, Vol. 42 >> Issue (8): 100312.doi: 10.1016/j.actphy.2026.100312

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静电诱导缺陷极化增强型PBA/MXene异质结构的双耦合界面以提升电磁波吸收性能

贾志卿1, 宫新菊1, 兰笛2, 孙环环1, 刘雨1, 高玉萍1, 郭思瑶1,*()   

  1. 1 青岛理工大学土木工程学院, 山东 青岛 266520
    2 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
  • 收稿日期:2026-03-06 修回日期:2026-04-23 录用日期:2026-04-25 发布日期:2026-06-11
  • 通讯作者: Email: guosy@qut.edu.cn (郭思瑶)

Electrostatically induced dual-coupled interfaces of defect polarization enhanced PBA/MXene heterostructures for boosting electromagnetic wave absorption

Zhiqing Jia1, Xinju Gong1, Di Lan2, Huanhuan Sun1, Yu Liu1, Yuping Gao1, Siyao Guo1,*()   

  1. 1 School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, Shandong Province, China
    2 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
  • Received:2026-03-06 Revised:2026-04-23 Accepted:2026-04-25 Published:2026-06-11
  • Contact: Email: guosy@qut.edu.cn (Siyao Guo)

摘要:

普鲁士蓝类似物(PBAs)因其可调控的配位框架和本征多孔性备受关注,但其结构稳定性不足与衰减能力有限制约了PBA衍生电磁波吸收体的性能。金属-碳异质结构体系可显著改善这些缺陷,但精确构建多组分异质界面并调控磁畴行为仍具挑战性。在此,我们提出一种静电场自辅助策略,成功构建双金属PBA衍生的多类型碳包覆/MXene (NiCo@C@C/MXene)异质结构,其精确设计的多组分界面形成静电诱导双耦合界面网络,成为增强介电损耗的核心机制。MXene纳米片和聚多巴胺(PDA)涂层协同强化PBA衍生碳基体,构建多维导电通路,而多类型碳基体、缺陷孔隙和磁性纳米颗粒共同增强了界面极化和磁损耗。这种协同效应实现了优化的阻抗匹配、强衰减特性和宽频吸收性能,使该材料在仅1.57 mm的超薄厚度下实现了−58.51 dB的最小反射损耗(RL)和5.44 GHz的有效吸收带宽(EAB)。雷达散射截面模拟进一步揭示了强化电磁波耗散的磁畴耦合网络。该研究为突破PBA材料本征局限和界面工程难题提供了新思路,为下一代高性能电磁波衰减材料开辟了路径。

关键词: 普鲁士蓝类似物, 电磁波吸收, 静电自组装, 异质结构, 协同效应

Abstract:

Prussian blue analogues (PBAs) offer tunable coordination frameworks and intrinsic porosity, yet their limited structural robustness and attenuation capability restrict the performance of PBA-derived electromagnetic wave (EMW) absorbers. These drawbacks can be substantially mitigated in metal-carbon heterostructure systems, yet achieving well-defined multi-component heterogeneous interfaces and controllable magnetic-domain behavior remains challenging. Here, we propose an electrostatic-field self-assisted strategy to construct bimetallic PBA-derived multi-type carbon-encapsulated/MXene (NiCo@C@C/MXene) heterostructures with precisely engineered multi-component interfaces, which create a rich landscape of electrostatically induced dual-coupled interfaces acting as a core mechanism for enhancing dielectric loss. MXene nanosheets and PDA coating reinforce the PBA-derived carbon matrix and form multidimensional conductive pathways, while multi-type carbon matrix, defect porosity, and magnetic nanoparticles collectively enhance interfacial polarization and magnetic loss. The resulting synergy yields optimized impedance matching, strong attenuation, and broadband absorption, enabling the material to achieve a minimum reflection loss (RL) of −58.51 dB and an effective absorption bandwidth (EAB) of 5.44 GHz at an ultrathin thickness of only 1.57 mm. Radar cross-section simulations further reveal domain-coupling networks that intensify EMW dissipation. This work establishes a concise route to address intrinsic PBA limitations and interface-engineering challenges, enabling next-generation high-performance EMW attenuation materials.

Key words: Prussian blue analogues, Electromagnetic wave absorption, Electrostatic self-assembly, Heterostructure, Synergistic effect