Ultrarobust MXene-based laminated paper with excellent thermal conductivity and flame retardancy

Multifunctional thermal management paper has attracted high attention in various aspects. Herein, a ultrarobust multifunctional laminated nacre-like paper was fabricated through vacuum-assisted alternate self-assembly. SEM and XRD results proved that cellulose nanofibers (CNF) are drawn into MXene nanosheets driven by vacuum. The unique laminated nacre-like structure endows the CNF/MXene paper excellent tensile strength (114.4 MPa), strain of failure (2.8%), toughness (2.6 MJ/m3) and Young’s modulus (4.1 GPa). Additionally, MXene paper shows superior thermal conductivity (14.93 W m−1 K−1), which could effectively reduce the surface temperature of the LED lamp. Furthermore, the paper can’t be ignited completely, the peak heat release rate is decreased by 77.8%, indicating the paper possesses superb flame retardant. Moreover, the CNF/MXene laminated papers maintain similar electrical insulation to CNF film, which ensure safety of electronic devices. This work provides an alternative method for fabricating multifunctional thermal management film in the field of electronic device.