In high-energy storage dielectrics, it is desirable to have high dielectric constant, low dielectric loss and low conductivity. In this work, we prepared a series of new ternary composite dielectric composites labeled as polymer/V₂C/ionic liquid, using low-content conductive two-dimensional MXene filler and low-content highly conductive organic ionic liquid to improve the dielectric constant of the dielectrics. At the same time, we used the strong compatibility between the ionic liquid (organic small molecules) and the polymer to suppress the interface electric leakage. Among these ternary composite dielectrics, the best composite material with 4 wt % V₂C MXene and 1 wt % ionic liquid could exhibit a high dielectric constant (54) and a low dielectric loss (0.15) at 1 kHz. This work could take advantage of the synergistic effect of inorganic MXene filler and organic ionic liquid filler to achieve the preparation of excellent composite dielectric materials.

在高能量储存电介质中，需要具有高介电常数、低介电损耗和低电导率。在这项工作中，我们制备了一系列标记为聚合物/V ₂ C/离子液体的新型三元复合介电复合材料，使用低含量导电二维MXene填料和低含量高导电有机离子液体来提高介电常数。电介质。同时，我们利用离子液体（有机小分子）与聚合物之间的强相容性来抑制界面漏电。在这些三元复合电介质中，最好的复合材料为 4 wt % V ₂C MXene 和 1 wt% 的离子液体可以在 1 kHz 下表现出高介电常数 (54) 和低介电损耗 (0.15)。该工作可以利用无机MXene填料和有机离子液体填料的协同作用，实现优异的复合介电材料的制备。