TY - JOUR
T1 - Tailoring the performance of mechanically robust highly conducting Silver/3D graphene aerogels with superior electromagnetic shielding effectiveness
AU - Aepuru, Radhamanohar
AU - Ramalinga Viswanathan, Mangalaraja
AU - Rao, B. V.Bhaskara
AU - Panda, Himanshu Sekher
AU - Sahu, Srikanta
AU - Sahoo, Prasanta Kumar
N1 - Funding Information:
Authors thank the support of Defence Institute of Advanced Technology (DIAT) and Siksha ‘O' Anusandhan (Deemed to be University) for facilitating infrastructure and characterizations to carry out the research work. Author R. Aepuru gratefully acknowledge FONDECYT Postdoctoral project: 3180172, CONICYT, Santiago-Chile.
Funding Information:
Authors thank the support of Defence Institute of Advanced Technology (DIAT) and Siksha ‘O' Anusandhan (Deemed to be University) for facilitating infrastructure and characterizations to carry out the research work. Author R. Aepuru gratefully acknowledge FONDECYT Postdoctoral project: 3180172, CONICYT, Santiago-Chile.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/11
Y1 - 2020/11
N2 - 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 ~0.032 S/cm and consequently enhanced the EM shielding effectiveness up 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.
AB - 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 ~0.032 S/cm and consequently enhanced the EM shielding effectiveness up 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.
KW - 3D graphene aerogels
KW - Conductive electrodes
KW - EMI shielding
KW - Mechanical robust
UR - http://www.scopus.com/inward/record.url?scp=85090407856&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2020.108043
DO - 10.1016/j.diamond.2020.108043
M3 - Article
AN - SCOPUS:85090407856
SN - 0925-9635
VL - 109
JO - Diamond and Related Materials
JF - Diamond and Related Materials
M1 - 108043
ER -