Tailoring the performance of mechanically robust highly conducting Silver/3D graphene aerogels with superior electromagnetic shielding effectiveness

被引：10
作者：
Aepuru, Radhamanohar [1 ,2 ]
Viswanathan, Mangalaraja Ramalinga [2 ,6 ]
Rao, B. V. Bhaskara [3 ]
Panda, Himanshu Sekher [3 ]
Sahu, Srikanta [4 ]
Sahoo, Prasanta Kumar [5 ]
机构：
[1] Univ Tecnol Metropolitana, Fac Ingn, Dept Ingn Mecan, Santiago, Chile
[2] Univ Concepcion, Fac Engn, Dept Mat Engn, Adv Ceram & Nanotechnol Lab, Concepcion 4070409, Chile
[3] Def Inst Adv Technol, Pune 25, Maharashtra, India
[4] Centurion Univ Technol & Management, Sch Appl Sci, Dept Chem, R Sitapur, Odisha, India
[5] Siksha O Anusandhan Deemed Be Univ, Dept Mech Engn, Bhubaneswar 751030, Odisha, India
[6] Univ Concepcion, Technol Dev Unit UDT, Coronel Ind Pk, Coronel, Chile
来源：
DIAMOND AND RELATED MATERIALS | 2020年 / 109卷
关键词：
3D graphene aerogels; Mechanical robust; Conductive electrodes; EMI shielding; FACILE SYNTHESIS; NANOCOMPOSITES; NANOSHEETS; NANOPARTICLES; COMPOSITES; REDUCTION; FILM; AG;
D O I：
10.1016/j.diamond.2020.108043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multifunctional lightweight and mechanically robust aerogels have been shown potential interest in flexible electronics and electromagnetic interference (EMI) shielding applications. In this work, we demonstrate an environmental friendly template assist cost-efficient silver/3D graphene aerogels (Ag/GAs) by one step freeze-casting route and explore for conductive electrodes and shielding applications. The influence of Ag content on the structural, mechanical, electrical properties, and shielding performance of GAs and its EM interactions were studied. The Ag/GAs exhibited elastic behavior without evidencing plastic deformation under cyclic compressive loading. Broadband conductivity studies suggest the Ag/GAs exhibited superior frequency-independent behavior with electrical conductivity similar to 0.032 S/cm and consequently enhanced the EM shielding effectiveness up to similar to 32 dB. The efficient EMI shielding performance of the Ag/GAs is envisaged by connective dissipation as well as multiple reflections and scattering of EM waves by the effect of Ag nanofillers in the 3D-graphene network.
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页数：8
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