Promising Ti3C2Tx MXene/Ni Chain Hybrid with Excellent Electromagnetic Wave Absorption and Shielding Capacity
Promising Ti3C2Tx MXene/Ni Chain Hybrid with Excellent Electromagnetic Wave Absorption and Shielding Capacity
复制标题
有前途的Ti3C2TX MXene/Ni链杂化物具有出色的电磁波吸收和屏蔽能力
DOI：
10.1021/acsami.9b07294
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发表时间：
2019-07-17
影响因子：
9.5
通讯作者：
Liu, Chuntai
中科院分区：
文献类型：
--
作者：
Liang, Luyang;Han, Gaojie;Liu, Chuntai
电磁污染影响人们的正常生活和健康，已引起社会的高度重视。本工作成功地设计并制备了一维Ni纳米链和二维Ti3C2Tx纳米片(MXene)组成的具有良好应用前景的吸波屏蔽材料MXene/Ni杂化材料。正如预期的那样，只需调整杂化材料中MXene的含量，就可以获得和控制良好的电磁波吸收和屏蔽性能。当MXene含量为10wt%时，仅当厚度为1.75 mm时，11.9 GHz处的反射损耗最小，为-49.9分贝。当MXene含量进一步增加到50wt%时，其最佳电磁屏蔽效能(SE)达到66.4分贝，吸收效能(SEA)为59.9分贝。机理分析表明，由于导电性Mxene链和磁性Ni链的协同作用，杂化材料具有良好的吸波屏蔽性能，可以方便地控制材料的介电性能和电磁损耗，从而获得合适的阻抗匹配条件和良好的电磁波消散能力。这项工作为开发MXene基电磁波吸收和屏蔽材料提供了一条简单而有效的途径。对今后吸波屏蔽材料的设计提出了普遍的指导意见。
Electromagnetic (EM) pollution affecting people's normal lives and health has attracted considerable attention in the current society. In this work, a promising EM wave absorption and shielding material, MXene/Ni hybrid, composed of one-dimensional Ni nanochains and two-dimensional Ti3C2Tx nanosheets (MXene), is successfully designed and developed. As expected, excellent EM wave absorption and shielding properties are obtained and controlled by only adjusting the MXene content in the hybrid. A minimum reflection loss of -49.9 dB is obtained only with a thickness of 1.75 mm at 11.9 GHz when the MXene content is 10 wt %. Upon further increasing the MXene content to 50 wt %, the optimal EM shielding effectiveness (SE) reaches 66.4 dB with an absorption effectiveness (SEA) of 59.9 dB. Mechanism analysis reveals that the excellent EM wave absorption and shielding performances of the hybrid are contributed to the synergistic effect of conductive MXene and magnetic Ni chains, by which, the dielectric properties and electromagnetic loss can be easily controlled to obtain appropriate impedance matching conditions and good EM wave dissipation ability. This work provides a simple but effective route to develop MXene-based EM wave absorption and shielding materials. A universal guideline for designing the absorbing and shielding materials for the future is also proposed.