Excellent Electromagnetic Absorption Properties of Poly(3,4-ethylenedioxythiophene)-Reduced Graphene Oxide-Co3O4 Composites Prepared by a Hydrothermal Method
Excellent Electromagnetic Absorption Properties of Poly(3,4-ethylenedioxythiophene)-Reduced Graphene Oxide-Co3O4 Composites Prepared by a Hydrothermal Method
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DOI：
10.1021/am404561c
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发表时间：
2013-12-11
影响因子：
9.5
通讯作者：
Sun, Xu
中科院分区：
文献类型：
--
作者：
Liu, Pan-Bo;Huang, Ying;Sun, Xu
合成了聚（3，4-乙撑二氧噻吩）-还原氧化石墨烯-Co 3 O 4（PEDOT-RGO-Co 3 O 4）三元复合材料，并研究了其电磁吸收性能。采用傅里叶变换红外光谱、X射线衍射、拉曼光谱、X射线光电子能谱和透射电子显微镜对复合材料的结构进行了表征。电磁参数表明，复合材料的电磁吸波性能增强归因于更好的阻抗匹配。在此基础上，提出了电磁互补理论来解释阻抗匹配现象。结果表明，PEDOT-RGO-Co 3 O 4复合材料在10.7 GHz处的最大反射损耗可达-51.1 dB，超过-10 dB的带宽为3.1 GHz，吸波体厚度为2.0 mm，具有优异的电磁吸收性能和较宽的吸收带宽，有望成为一种新型的吸波材料。
The ternary composites of poly(3,4-ethylenedioxythiophene)-reduced graphene oxide-Co3O4 (PEDOT-RGO-Co3O4) were synthesized and the electromagnetic absorption property of the composites was investigated. The structure of the composites was characterized with Fourier-transform infrared spectra, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscope. The electromagnetic parameters indicate the enhanced electromagnetic absorption property of the composites was attributed to the better impedance matching. On the basis of the above characterization, an electromagnetic complementary theory was proposed to explain the impedance matching. It can be found that the maximum reflection loss of PEDOT-RGO-Co3O4 can reach -51.1 dB at 10.7 GHz, and the bandwidth exceeding -10 dB is 3.1 GHz with absorber thickness of 2.0 mm. Therefore, the PEDOT-RGO-Co3O4 composites, with such excellent electromagnetic absorption properties and wide absorption bandwidth, can be used as a new kind of candidate for microwave absorbing materials.