Anand, Sebastian Mani, Dineshkumar Islam, Md. Akhtarul Choi, Won-Kook Park, Pyeong Jun Kim, Hanchul Kim, Sung-Ryong 2025-11-21T00:20:58Z 2025-11-21T00:20:58Z 2025-11-11 2025-10 1944-8244 https://pubs.kist.re.kr/handle/201004/153557 Fabricating freestanding films with pristine MXene aims at meeting all-around high standards of modern electronics through boosting high electrical conductivity, thermal conductivity, and robust mechanical strength. However, voids and defects arising during fabrication often limit the performance and versatility. An effective electrostatic repulsion-induced alignment strategy is suggested here to overcome the major obstacles in the industrial application of MXene films. This approach combines polydopamine (PDA)-modified MXene with two-dimensional (2D) tantalum disulfide (TaS2) nanosheets to enhance the alignment and compactness of MXene layers. Incorporating a small amount of TaS2 nanosheets, which carry negative charges, facilitates the alignment of PDA-modified MXene sheets during film assembly via electrostatic repulsion. This results in the fabrication of strong and well-ordered composite films with a synergistic effect between MXene and TaS2. The resultant MXene/TaS2 (MXT) films exhibit high mechanical strength (92 MPa), toughness (2.49 MJ·m–3), excellent electrical conductivity (7932 S cm–1), electromagnetic interference (EMI), shielding effectiveness (SE) (62 dB), and superior in-plane thermal conductivity (53.19 W·m–1·K–1). In addition, MXT films demonstrate remarkable Joule heating performance and environmental stability. English American Chemical Society Self-Alignment of MXene Films Induced by Electrostatic Repulsion from TaS2 Nanosheets for Multifunctional Applications Article 10.1021/acsami.5c12084 1 ACS Applied Materials & Interfaces, v.17, no.41, pp.57486 - 57499 ACS Applied Materials & Interfaces 17 41 57486 57499 N scie scopus 001585256200001 2-s2.0-105018722248 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article HIGH-THERMAL-CONDUCTIVITY TI3C2 tantalumdisulfide electrostatic alignment EMI shielding thermal conductivity Jouleheating MXene