TY  - JOUR
AU  - Zhou, Bing
AU  - Song, Jianzhou
AU  - Wang, Bo
AU  - Feng, Yuezhan
AU  - Liu, Chuntai
AU  - Shen, Changyu
PY  - 2022
TI  - Robust double-layered ANF/MXene-PEDOT:PSS Janus films with excellent multi-source driven heating and electromagnetic interference shielding properties
JO  - Nano Research
SN  - 1998-0124
SP  - 9520
EP  - 9530
VL  - 15
IS  - 10
AB  - The strategy of incorporating polymers into MXene-based functional materials has been widely used to improve their mechanical properties, however with inevitable sacrifice of their electrical conductivity and electromagnetic interference (EMI) shielding performance. This study demonstrates a facile yet efficient layering structure design to prepare the highly robust and conductive double-layer Janus films comprised of independent aramid nanofiber (ANF) and Ti3C2Tx MXene/poly(3,4-ethylenedioxy- thiophene):poly(styrenesulfonate) (PEDOT:PSS) layers. The ANF layer serves to provide good mechanical stability, whilst the MXene/PEDOT:PSS layer ensures excellent electrical conductivity. Doping PEDOT:PSS into the MXene layer enhances the interfacial bonding strength between the MXene and ANF layers and improves the hydrophobicity and water/oxidation resistance of MXene layer. The resultant ANF/MXene-PEDOT:PSS Janus film with a conductive layer thickness of 4.4 μm was shown to display low sheet resistance (2.18 Ω/sq), good EMI shielding effectiveness (EMI SE of 48.1 dB), high mechanical strength (155.9 MPa), and overall toughness (19.4 MJ/m3). Moreover, the excellent electrical conductivity and light absorption capacity of the MXene-PEDOT:PSS conductive layer mean that these Janus films display multi-source driven heating functions, producing excellent Joule heating (382 °C at 4 V) and photothermal conversion (59.6 °C at 100 mW/m2) properties.
UR  - https://doi.org/10.1007/s12274-022-4756-x
DO  - 10.1007/s12274-022-4756-x