A flexible sandwich graphene/silver nanowires/graphene thin film for high-performance electromagnetic interference shielding

Pradip Kumar; Faisal Shahzad; Soon Man Hong; Chong Min Koo

doi:10.1039/c6ra18652a

A flexible sandwich graphene/silver nanowires/graphene thin film for high-performance electromagnetic interference shielding

Pradip Kumar, Faisal Shahzad, Soon Man Hong, Chong Min Koo

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

We report the preparation and characterization of flexible graphene/silver nanowires (AgNWs)/graphene sandwich thin films for high-performance electromagnetic interference shielding. AgNWs were sandwiched between reduced graphene oxide (rGO) films through a simple filtration process followed by reduction with hydriodic acid. The rGO/AgNWs/rGO thin films exhibited not only an excellent electrical conductivity of 64 500 S m^-1 but also a larger EMI shielding value of ∼38 dB at 35 wt% AgNW content. This enhancement in electrical conductivity and EMI shielding is mainly attributed to the tight adhesion of the top and bottom graphene layers with the middle AgNW layer. In the sandwich hybrid films, the graphene layers not only provide extra pathways for electron transfer, but also block the contact between the AgNWs and oxygen, leading to a better resistance to oxidation, good electrical conductivity, and excellent mechanical flexibility.

Original language	English
Pages (from-to)	101283-101287
Number of pages	5
Journal	RSC Advances
Volume	6
Issue number	103
DOIs	https://doi.org/10.1039/c6ra18652a
Publication status	Published - 2016
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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title = "A flexible sandwich graphene/silver nanowires/graphene thin film for high-performance electromagnetic interference shielding",

abstract = "We report the preparation and characterization of flexible graphene/silver nanowires (AgNWs)/graphene sandwich thin films for high-performance electromagnetic interference shielding. AgNWs were sandwiched between reduced graphene oxide (rGO) films through a simple filtration process followed by reduction with hydriodic acid. The rGO/AgNWs/rGO thin films exhibited not only an excellent electrical conductivity of 64 500 S m-1 but also a larger EMI shielding value of ∼38 dB at 35 wt% AgNW content. This enhancement in electrical conductivity and EMI shielding is mainly attributed to the tight adhesion of the top and bottom graphene layers with the middle AgNW layer. In the sandwich hybrid films, the graphene layers not only provide extra pathways for electron transfer, but also block the contact between the AgNWs and oxygen, leading to a better resistance to oxidation, good electrical conductivity, and excellent mechanical flexibility.",

author = "Pradip Kumar and Faisal Shahzad and Hong, {Soon Man} and Koo, {Chong Min}",

note = "Funding Information: This work was supported by Fundamental R and D Program for Core Technology of Materials, and Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea, and partially supported by Nano Materials Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning, Republic of Korea, and by the Korea Institute of Science and Technology. PK also acknowledges the financial support from Department of Science and Technology, India under DST INSPIRE Faculty Award.",

year = "2016",

doi = "10.1039/c6ra18652a",

language = "English",

volume = "6",

pages = "101283--101287",

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AU - Kumar, Pradip

AU - Shahzad, Faisal

AU - Hong, Soon Man

AU - Koo, Chong Min

N1 - Funding Information: This work was supported by Fundamental R and D Program for Core Technology of Materials, and Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea, and partially supported by Nano Materials Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning, Republic of Korea, and by the Korea Institute of Science and Technology. PK also acknowledges the financial support from Department of Science and Technology, India under DST INSPIRE Faculty Award.

PY - 2016

Y1 - 2016

N2 - We report the preparation and characterization of flexible graphene/silver nanowires (AgNWs)/graphene sandwich thin films for high-performance electromagnetic interference shielding. AgNWs were sandwiched between reduced graphene oxide (rGO) films through a simple filtration process followed by reduction with hydriodic acid. The rGO/AgNWs/rGO thin films exhibited not only an excellent electrical conductivity of 64 500 S m-1 but also a larger EMI shielding value of ∼38 dB at 35 wt% AgNW content. This enhancement in electrical conductivity and EMI shielding is mainly attributed to the tight adhesion of the top and bottom graphene layers with the middle AgNW layer. In the sandwich hybrid films, the graphene layers not only provide extra pathways for electron transfer, but also block the contact between the AgNWs and oxygen, leading to a better resistance to oxidation, good electrical conductivity, and excellent mechanical flexibility.

AB - We report the preparation and characterization of flexible graphene/silver nanowires (AgNWs)/graphene sandwich thin films for high-performance electromagnetic interference shielding. AgNWs were sandwiched between reduced graphene oxide (rGO) films through a simple filtration process followed by reduction with hydriodic acid. The rGO/AgNWs/rGO thin films exhibited not only an excellent electrical conductivity of 64 500 S m-1 but also a larger EMI shielding value of ∼38 dB at 35 wt% AgNW content. This enhancement in electrical conductivity and EMI shielding is mainly attributed to the tight adhesion of the top and bottom graphene layers with the middle AgNW layer. In the sandwich hybrid films, the graphene layers not only provide extra pathways for electron transfer, but also block the contact between the AgNWs and oxygen, leading to a better resistance to oxidation, good electrical conductivity, and excellent mechanical flexibility.

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A flexible sandwich graphene/silver nanowires/graphene thin film for high-performance electromagnetic interference shielding

Abstract

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