A novel kind of wafer-like Ti₃C₂/Carbon nanoparticle (Ti₃C₂/Cnp) hybrids electromagnetic (EM) wave absorbing agent with enhanced polarization loss has been designed and synthesized by in-situ growth of carbon nanoparticles (Cnps) between the layers of two-dimensional Ti₃C₂T_x MXenes according to the gradient EM loss and impedance matching design principles. The growth of Cnps between Ti₃C₂ layers takes use of the layered structure of two-dimensional MXenes to form a large number of heterogeneous interfaces, which makes the polarization loss of this hybrid absorbing agent 10% higher than that of Ti₃C₂T_x MXenes. The Cnps and TiO₂ particles produced during hydrothermal process together with Ti₃C₂ form a gradient loss model containing high dielectric loss phase (Cnp), intermediate dielectric loss phase (Ti₃C₂) and transmission phase (TiO₂). This unique structure can further enhance the EM wave attenuation ability of Ti₃C₂T_x MXenes by improving the impedance matching. The Ti₃C₂/Cnp hybrids mixed with paraffin at 50 wt% demonstrate an optimal minimum reflection coefficient (RC_min) of −47.6 dB at 11.10 GHz with a thickness of 1.75 mm. This wafer-like Ti₃C₂/Cnp hybrids provide an ideal choice for the design of MXenes-based absorbing agents with excellent tunable EM absorption performance.

通过原位生长碳纳米粒子（Cnps），设计合成了一种新型的晶片状Ti ₃ C ₂ /碳纳米粒子（Ti ₃ C ₂ / Cnp）杂化电磁波（EM）吸波剂。根据梯度EM损耗和阻抗匹配设计原理，在二维Ti ₃ C ₂ T _x MXenes的层之间形成层间距离。Ti ₃ C ₂层之间Cnps的生长利用二维MXene的层状结构形成大量的异质界面，这使得该混合吸收剂的极化损耗比Ti高10％。₃ C ₂ T _x MXenes。在水热过程中产生的Cnps和TiO ₂颗粒与Ti ₃ C _2一起形成了包含高介电损耗相（Cnp），中间介电损耗相（Ti ₃ C ₂）和透射相（TiO ₂）的梯度损耗模型。通过改善阻抗匹配，这种独特的结构可以进一步增强Ti ₃ C ₂ T _x MXenes的EM波衰减能力。Ti ₃ C ₂ / Cnp杂化物与石蜡按50 wt％混合后显示出最佳最小反射系数（RC在11.10 GHz时为−47.6 dB的_最小值），厚度为1.75毫米。这种晶片状的Ti ₃ C ₂ / Cnp杂化物为具有优异的可调谐EM吸收性能的基于MXenes的吸收剂设计提供了理想的选择。