Electromagnetic Interference Shielding Properties of Conductive Polyaniline/TiO2/MoS2 Hybrid Composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F25%3A43909857" target="_blank" >RIV/60076658:12310/25:43909857 - isvavai.cz</a>

Výsledek na webu

<a href="http://chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c02527?ref=article_openPDF" target="_blank" >http://chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://pubs.acs.org/doi/pdf/10.1021/acsomega.5c02527?ref=article_openPDF</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsomega.5c02527" target="_blank" >10.1021/acsomega.5c02527</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electromagnetic Interference Shielding Properties of Conductive Polyaniline/TiO2/MoS2 Hybrid Composites

Popis výsledku v původním jazyce

This study investigates the hybrid ternary composite of polyaniline (PANI), titanium dioxide (TiO2), and molybdenum disulfide (MoS2) to improve electromagnetic interference (EMI) shielding in high-frequency electronic devices. The study examines the shielding effectiveness (SE) of this hybrid composite by altering MoS2 concentrations. The composite was created through a four-stage in situ polymerization method, with MoS2 levels at 10, 20, and 30 wt % and a fixed TiO2 content of 10 wt %. A Vector network analyzer (VNA) was employed to measure EMI SE and complex permittivity in the 8.2-12.4 GHz frequency range. The composite with 20 wt % MoS2 exhibited the highest SE of 50.86 dB for 3 mm thickness, surpassing other formulations. The enhanced shielding performance is credited to the synergistic effects of MoS2 and TiO2, which enhance the impedance matching, electrical conductivity, and electromagnetic wave dissipation. Further analysis revealed that factors, such as binding and agglomeration during in situ polymerization, along with electromagnetic absorption and multiple scattering mechanisms, significantly influence the shielding process. The results indicate that the optimized PANI/TiO2/MoS2 hybrid composite shows promise as an effective EMI shielding material for cutting-edge electronic and communication applications.

Název v anglickém jazyce

Electromagnetic Interference Shielding Properties of Conductive Polyaniline/TiO2/MoS2 Hybrid Composites

Popis výsledku anglicky

This study investigates the hybrid ternary composite of polyaniline (PANI), titanium dioxide (TiO2), and molybdenum disulfide (MoS2) to improve electromagnetic interference (EMI) shielding in high-frequency electronic devices. The study examines the shielding effectiveness (SE) of this hybrid composite by altering MoS2 concentrations. The composite was created through a four-stage in situ polymerization method, with MoS2 levels at 10, 20, and 30 wt % and a fixed TiO2 content of 10 wt %. A Vector network analyzer (VNA) was employed to measure EMI SE and complex permittivity in the 8.2-12.4 GHz frequency range. The composite with 20 wt % MoS2 exhibited the highest SE of 50.86 dB for 3 mm thickness, surpassing other formulations. The enhanced shielding performance is credited to the synergistic effects of MoS2 and TiO2, which enhance the impedance matching, electrical conductivity, and electromagnetic wave dissipation. Further analysis revealed that factors, such as binding and agglomeration during in situ polymerization, along with electromagnetic absorption and multiple scattering mechanisms, significantly influence the shielding process. The results indicate that the optimized PANI/TiO2/MoS2 hybrid composite shows promise as an effective EMI shielding material for cutting-edge electronic and communication applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Omega

ISSN

2470-1343

e-ISSN

2470-1343

Svazek periodika

10

Číslo periodika v rámci svazku

26

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

28143-28152

Kód UT WoS článku

001516865700001

EID výsledku v databázi Scopus

2-s2.0-105008713222