One-dimensional (1D) nanomaterials allow reflection of electromagnetic (EM) waves due to large anisotropy and aspect ratio. It is still a challenge to optimize the impedance matching characteristic for strong EM dissipation of 1D nanomaterials. Herein, we propose a strategy of incorporating two-dimensional (2D) layered double hydroxides (LDHs) sheets with 1D nanowires to reinforce interactions with EM waves. Wherein, 1D MnO₂ nanowires are used to support the LDH nanosheets, which facilitates the EM waves capture and impedance matching characteristics. Moreover, the heterogeneous interfaces and vacancies contributes to the polarization loss as well. As a consequence, the minimum reflection loss (RL_min) of MnO₂@ZnCoNi-LDHs demonstrates −56.3 dB at 2.4 mm and the broad effective absorption bandwidth (f_E) reaches 4.56 GHz at 2.1 mm. This heterogeneous structure assembly strategy can be served as a reference for refining the absorption performance of 1D EM absorbers.

由于大的各向异性和纵横比，一维 (1D) 纳米材料允许反射电磁 (EM) 波。优化一维纳米材料的强 EM 耗散的阻抗匹配特性仍然是一个挑战。在这里，我们提出了一种策略，将二维 (2D) 层状双氢氧化物 (LDH) 片与一维纳米线结合，以加强与 EM 波的相互作用。其中，一维MnO ₂纳米线用于支撑LDH纳米片，有利于EM波捕获和阻抗匹配特性。此外，异质界面和空位也会导致极化损耗。因此，MnO _{2的最小反射损耗 (} RL _{min )}@ZnCoNi-LDHs 在 2.4 mm 处表现出 -56.3 dB，在 2.1 mm 处宽有效吸收带宽 ( f _E ) 达到 4.56 GHz。这种异质结构组装策略可以作为改进一维电磁吸收体吸收性能的参考。