Reduced graphene oxide (RGO)/Mn₃O₄ nanocomposites for dielectric loss properties and electromagnetic interference shielding effectiveness at high frequency

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• 作者：Yan Wang^a ; Hongtao Guan^a ; Chenjun Dong^a ; Xuechun Xiao^a ; Shangfeng Du^b ; ^{S.Du@bham.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; Yude Wang^a ; ^c ; ^{ydwang@ynu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：B. Nanocomposites ; C. Dielectric properties ; C. Magnetic properties ; EMI shielding effectiveness
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：42
• 期：1
• 页码：936-942
• 全文大小：2364 K

文摘

Reduced graphene oxide (RGO)/Mn₃O₄ nanocomposites are prepared by a one-step hydrothermal approach and the performance of electromagnetic interference (EMI) shielding was studied. Based on an enhanced electrical conductivity through micro-current network induced by unique 2D nanostructures of RGO, the electron hopping between Mn²⁺ and Mn³⁺ is discussed. Benefiting from the enhanced effect of Debye dipolar relaxation and Maxwell-Wagner-Sillars (MWS) polarization on dielectric properties, electromagnetic wave propagating and microwave attenuation performance, the maximum EMI shielding effectiveness of 29 dB is achieved.