Amino Termination of Ti3C2 MXene Induces its Graphene Hybridized Film with Enhanced Ordered Nanostructure and Excellent Multiperformance

The strategy of nacre-inspired structures or the introduction of polymers can only strengthen and toughen 2D inorganic nanosheets-based flexible films while mitigating their other properties. Herein, based on bending rigidity discrepancy of reduced graphene oxides (rGO) and Ti3C2 nanosheets, the introduction of amino termination on Ti3C2 (Ti3C2-NH2) endows 3rGO/7Ti(3)C(2)-NH2 films with enhanced ordered nanostructure and excellent multiperformance. Its interlayer-ordered nanostructures are consistently confirmed by both wide-angle X-ray scattering and polarized Raman spectroscopy. The tensile strength and fracture energy increase by 84.7% and 156.3% compared with those of traditional 3rGO/7Ti(3)C(2) film, respectively. The higher remained stress (81%) after relaxation agrees well with its better nanosheet orientation. The average fatigue cycles to failure approach 16 951 times under 150 MPa maximum tensile loading. Due to a large decrease in the interface thermal resistance, its thermal conductivity approaches approximate to 48.9 W m(-1) K-1. The results also show that the absorbance of Ti3C2-NH2 based films greatly surpass the maximum of the components in both X-band frequency and middle infrared range. Particularly, 3rGO/7Ti(3)C(2)-NH2 films exhibit anomalously high absorbance in the middle infrared range (55% for 22 mu m thickness). It suggests that this film has good promise as flexible electronic devices with excellent mechanical, EMI shielding, heat dissipation, and thermal accumulation monitoring capabilities.