Polyaniline/BaTiO<sub>3</sub>/MoS<sub>2</sub> Hybrid Nanocomposites for High-Frequency EMI Shielding Applications
The Electromagnetic interference (EMI) shielding effectiveness for PANI/BaTiO3/MoS2 hybrid nanocomposites was assessed in the X-band. A foundational composite of PANI with 10 wt % BaTiO3 (PB) demonstrated a shielding effectiveness (SE) of ∼21 dB at a thickness of 1 mm. Adding 10 wt % MoS2 (PBM-1) increased SE to ∼30 dB. Increasing thickness to 1.5 mm (PBM-2) and 2.5 mm (PBM-3) further improved SE to ∼37 and ∼45 dB, respectively. Dielectric analysis showed strong interfacial polarization and high dielectric loss around 11.5 GHz. Power coefficient data confirmed absorption-dominated shielding with low transmission and high absorption. The combination of MoS2 and BaTiO3 in a PANI matrix, along with optimized thickness, significantly enhances EMI shielding, making the composites suitable for high-frequency applications.
Authors
- D. Kannadassan
- A. Lakshmanan
- Amit Malakar
- Suryasarathi Bose (ORCID: https://orcid.org/0000-0001-8043-9192)
- V. Velmurugan (ORCID: https://orcid.org/0000-0001-7893-4514)
- Aravinth Dhanasekaran (ORCID: https://orcid.org/0009-0002-9430-5464)
Institutions
- Sewanee: The University of the South (US)
- Indian Institute of Science Bangalore (IN)
- Vellore Institute of Technology University (IN)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2025-08-29
- DOI
- https://doi.org/10.1021/acsanm.5c03074
- Citations
- 1
- Primary Topic
- Electromagnetic wave absorption materials
- Type
- article
- Field-Weighted Citation Impact
- 0.43