ItemArticle

Polypyrrole/silver/graphene ternary composites for high-performance Ku-band electromagnetic interference shielding

Title
Polypyrrole/silver/graphene ternary composites for high-performance Ku-band electromagnetic interference shielding
Creator
Punnakkal, Vrinda S.; Ramakrishnan, Anilkumar; Pradeep, Anju; Hossain, Aslam; John, Manu Punnen; Anila, E.I.
Description
Unwanted electromagnetic waves can significantly affect the performance of electronic devices and communication systems. A high-performance electromagnetic interference shielding (EMI) material is a solution to this issue. This study introduces a cost-effective one-pot synthesis method for polypyrrole/silver (Ppy/Ag), polypyrrole/graphene (Ppy/Gr) and polypyrrole/silver/graphene (Ppy/Ag/Gr) ternary composites with adjustable graphene concentrations. Detailed structural and morphological analyses using FTIR, XRD and STEM confirm the successful incorporation of Ag nanoparticles and graphene into the polypyrrole matrix. The total shielding effectiveness (SET) of the ternary composites in the Ku band shows an impressive 30.86 dB at 12.7 GHz for the 5 wt.% graphene composite, primarily driven by absorption mechanisms (SEA> SER). The synergistic interaction between Ag, which provides conductive pathways, and graphene, which offers structural reinforcement, significantly enhances interfacial polarisation and conductivity, surpassing the performance of binary counterparts (Ppy/Ag and Ppy/Gr. The results of this work introduce a lightweight, potent and economical composite material for EMI shielding applications in the Ku band. 2025 Elsevier B.V.
Source
Synthetic Metals;Volume;312;Issue;;Article No.;117873;
Date
01-01-2025
Publisher
Elsevier Ltd
Subject
Absorption; Graphene; Ku band; Polarisation; Shielding
Coverage
Punnakkal V.S., Optoelectronic and Nanomaterials Research Laboratory, Department of Physics, Union Christian College, Kerala, Aluva, 683102, India, Sree Sankara College, Kerala, Kalady, 683574, India; Ramakrishnan A., Department of Electronics, Cochin University of Science and Technology, Kochi, India; Pradeep A., School of Engineering, Division of Electronics, Cochin University of Science and Technology, Kochi, India; Hossain A., Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russian Federation; John M.P., Optoelectronic and Nanomaterials Research Laboratory, Department of Physics, Union Christian College, Kerala, Aluva, 683102, India; Anila E.I., Christ (Deemed to be University), Karnataka, Bengaluru, 560029, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 3796779; CODEN: SYMED
Format
online
Language
English
Type
Article

Citation

Punnakkal, Vrinda S.; Ramakrishnan, Anilkumar; Pradeep, Anju; Hossain, Aslam; John, Manu Punnen; Anila, E.I., “Polypyrrole/silver/graphene ternary composites for high-performance Ku-band electromagnetic interference shielding,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 17, 2026, https://archives.christuniversity.in/items/show/22468.

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