For the purpose of achieving excellent electromagnetic wave absorption performance, composition control and microstructure design of absorbers are crucial. Ti₃C₂T_x, transition metal carbides with remarkable conductivity and mechanical properties, are considered as common substrates to construct high-performance absorbers. In order to improve the impedance matching and enrich electromagnetic wave attenuation mechanism of single Ti₃C₂T_x substrate, transition metal sulfides (MoS₂, NiS) with outstanding dielectric properties are introduced to fabricate the novel system of NiS/MoS₂/Ti₃C₂T_x. Notably, this system has a unique multilayer-scale structure that spherical NiS particles are decorated on the multilayered Ti₃C₂T_x substrate and two-dimensional (2D) MoS₂ nanosheets stack on the surface like scales. Under the synergistic effects of intense dielectric loss and multiple reflection, NiS/MoS₂/Ti₃C₂T_x hybrid shows the wide effective absorption bandwidth (EAB) of 5.04 GHz at 2.1 mm and the minimum reflection loss (RL_min) of −58.48 dB at 2.4 mm. This work provides an innovative idea for the research of novel MXene-based absorbers.

为了实现优异的电磁波吸收性能，吸收体的成分控制和微观结构设计至关重要。Ti ₃ C ₂ T _{x 是}具有显着导电性和机械性能的过渡金属碳化物，被认为是构建高性能吸收体的常用基材。为了提高单个Ti ₃ C ₂ T _x衬底的阻抗匹配和丰富电磁波衰减机制，引入具有优异介电性能的过渡金属硫化物（MoS ₂，NiS）制备NiS/MoS ₂ /Ti新体系₃ C ₂Ť _X。值得注意的是，该系统具有独特的多层级结构，球形 NiS 颗粒装饰在多层 Ti ₃ C ₂ T _x基板上，二维 (2D) MoS ₂纳米片堆叠在表面上，如鳞片状。在强介电损耗和多次反射的协同作用下，NiS/MoS ₂ /Ti ₃ C ₂ T _x混合体在 2.1 mm 处显示出 5.04 GHz 的宽有效吸收带宽 (EAB) 和 - 的最小反射损耗 (RL _min ) 2.4 毫米处为 58.48 分贝。这项工作为新型 MXene 基吸收剂的研究提供了创新思路。