Polyaniline/Ta2C MXene nanocomposites for electromagnetic noise reduction

• Polyaniline (PANI) and PANI/Ta 2 C MXene nanocomposites are chemically synthesised. • Flexible and free-standing films of PANI nanofibers, Ta 2 C MXene, and their nanocomposites are prepared. • The work achieves exceptional electromagnetic interference (EMI) shielding of 58 dB and 99.999% attenuation in flexible PANI/Ta 2 C sheets. • This work develops promising conducting PANI/Ta 2 C nanocomposites for EMI shielding applications. MXene-based nanocomposites are potential candidates to meet the escalating challenges posed by EMI and radiation. Despite the promising characteristics of MXene, the synthesis of flexible and long-term stable polymer-MXene nanocomposites with exceptional EMI shielding is considerably challenging. This study investigates novel PANI/Ta 2 C MXene nanocomposites for EMI shielding. Chemically synthesised PANI/Ta 2 C MXene nanocomposites are characterized, and their flexible free-standing films are prepared. PANI/Ta 2 C MXene nanocomposites demonstrate synergistic behaviour to shield EMI, superior to either component. A free-standing film of PANI/Ta 2 C nanocomposite I exhibits an excellent shielding efficiency of 58 dB over a frequency range from 7 to 13 GHz, which corresponds to 99.999% shielding effectiveness and specific shielding performance (SSE) as high as 580 dB/mm. These ultra-thin, lightweight and flexible free-standing films may find application in next-generation EMI shielding solutions for wearable technology, electronic packaging, and aerospace applications.