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鈷納米粒子改性石墨烯復(fù)合材料的電磁性能
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北京航空航天大學,北京航空航天大學,北京航空航天大學,北京航空航天大學

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TB34

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北京市科學技術(shù)委員會(D141100002414001)及航空基金(No.2013ZF51073)


Electromagnetic properties of graphene composites modified with cobalt nanoparticles
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Beihang University,Beihang University,Beihang University,Beihang University

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    摘要:

    本文采用化學鍍的方法，先后用氯化亞錫敏化、氯化鈀活化，在石墨烯表面沉積鈷納米粒子。XRD、TEM結(jié)果顯示鈷在石墨烯表面的晶體結(jié)構(gòu)和含量因鈷前驅(qū)體鹽和還原劑濃度而異。電磁測試結(jié)果表明：鈷含量的增加和石墨烯的還原均能提升Co-RGO的電導率；同時，Co-RGO納米復(fù)合材料由于具有磁損耗和大量界面引入的介電損耗，吸波性能優(yōu)異，Co-RGO*1在1~18GHz頻段內(nèi)反射率低于-10dB的頻寬約為4GHz，Co-RGO*2在26.5~40GHz頻段內(nèi)反射率均小于-23dB。

    Abstract:

    In this paper, cobalt nanoparticles were deposited on the surface of graphene by electroless plating,first sensitization and then activation using stannous chloride and palladium chloride respectively. XRD and TEM results showed that the concentrations of cobalt precursor and reductant affected the structures and yield of cobalt crystals. Electromagnetic tests results showed that the increasing cobalt content and reduction of graphene both improved the conductivity of Co-RGO. Meanwhile, Co-RGO nanocomposites had excellent absorbing properties because of magnetic loss and dielectric loss by lots of interfaces. For instance, the bandwidth of reflection below -10dB for Co-RGO*1 during 1~18GHz was about 4GHz, and the reflection for Co-RGO*2 was below -23dB from 26.5 to 40 GHz.

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張海琴,徐雙雙,陳元,肇研.鈷納米粒子改性石墨烯復(fù)合材料的電磁性能[J].稀有金屬材料與工程,2017,46(12):3785~3791.[Zhang Haiqin, Xu Shuangshuang, Chen Yuan, Zhao Yan. Electromagnetic properties of graphene composites modified with cobalt nanoparticles[J]. Rare Metal Materials and Engineering,2017,46(12):3785~3791.]
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  • 收稿日期:2015-10-26
  • 最后修改日期:2016-01-21
  • 錄用日期:2016-02-24
  • 在線發(fā)布日期: 2018-01-04
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