还原石墨烯与片状氧化镍复合材料的隐身性能

Stealthy Property of Reduced Graphene/NiO Nanosheets

采用一锅法制备还原石墨烯与片状氧化镍复合材料。复合材料的结构形貌、晶型和电磁参数分别通过扫描电镜、透射电镜、X射线衍射仪以及HP8722ES型矢量网络分析仪进行表征、测试与分析。结果表明,还原石墨烯与片状氧化镍复合材料同纯还原石墨烯相比在低频段（2.0-6.6 GHz）有更佳的吸收宽度和微波吸收能力,还原石墨烯与氧化镍片复合材料的介电损耗显著增加。大尺寸氧化镍片与还原石墨烯紧密复合提高了材料的载流子迁移率,从而提高了材料的吸波特性。

The reduced graphene oxide（ RGO） coated with large area Ni O nanosheets composites were synthesized through a facile one-pot simplified route. The morphology,crystallographic structures and microwave parameters of the composites were investigated by SEM,TEM,XRD and HP8722 ES network analyzer. As a result,the RGO / Ni O has a much higher reflection loss and wider bandwidth than pure RGO in the low frequency range（ 2. 0- 6. 6 GHz）. The RGO / Ni O nanosheets have much higher dielectric loss properties. The interfacial affinity between Ni O and GO may increase the numbers of conductive pathways for electron transfer and enhance microwave absorption property of composites consequently.