Designed fabrication of reduced graphene oxides/Ni hybrids for effective electromagnetic absorption and shielding
Designed fabrication of reduced graphene oxides/Ni hybrids for effective electromagnetic absorption and shielding
复制标题
设计制造还原氧化石墨烯/镍混合物，以实现有效的电磁吸收和屏蔽
DOI：
10.1016/j.carbon.2018.07.044
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发表时间：
2018-11-01
期刊：
影响因子：
10.9
通讯作者：
Yin, Peng-Gang
中科院分区：
文献类型：
--
作者：
Xu, Wei;Wang, Guang-Sheng;Yin, Peng-Gang
成功合成了不同质量比的还原氧化石墨烯（rGO）/Ni杂化材料，以调节其微波吸收和电磁屏蔽性能。通过适当调节由不同含量的rGO和Ni得到的介电常数和磁导率，得到具有优异微波吸收性能的rGO/Ni复合材料。当rGO/Ni比为1：1时，复合材料在13 GHz处的最佳反射损耗值为-39.03 dB，厚度为2.0 mm时，小于-10 dB的带宽可达4.3 GHz（11 ~ 15.3 GHz），且rGO/Ni比为4：1时，复合材料上级电磁屏蔽性能最高可达52 dB，远远超过大多数碳基材料的最佳值。讨论了吸收和屏蔽性能的基本机制。(C)2018爱思唯尔有限公司版权所有
Reduced graphene oxide (rGO)/Ni hybrids with different mass ratio are successful synthesized in order to tune the microwave absorption together with the electromagnetic shielding performance. By properly adjusting the permittivity and permeability derived from different contents of the rGO and Ni, an rGO/Ni composite with excellent microwave absorption properties is obtained. An optimal reflection loss value of -39.03 dB at 13 GHz is achieved for the composite with rGO/Ni ratio of 1:1, and the bandwidth less than -10 dB can reach up to 4.3 GHz (from 11 to 15.3 GHz) with a thickness of 2.0 mm. Furthermore, the composite with rGO/Ni ratio of 4:1 shows superior electromagnetic shielding performance as high as 52 dB, which far surpasses the best value for most carbon-based materials. Fundamental mechanisms for absorbing and shielding performance are discussed. (C) 2018 Elsevier Ltd. All rights reserved.