Superior thermal interface materials for thermal management

Thermal interface materials (TIMs) have been widely used in various electronic devices and are crucial for next generation electronics such as flexible electronics. Ultrathin full carbon films with extraordinary high thermal conductivity (k) and promising mechanical strength have been well documented, but the brittleness (elongation at break similar to 0.5-3.0%) limits their practical applications. Besides high k, superior TIMs required excellent flexibility, low thickness and low hardness to ensure the thermal management capability. Herein, high-performance polymer composite films with the combination of high k(parallel to) (39.27 Wm(-1) K(-1 )for natural rubber/graphene nano-platelet (NR/GNPs) composite and 11.82 Wm(-1) K-1 for NR/boron nitride (NR/BN) composite), super conformability(elongation at break similar to 12%, low hardness and modulus) and excellent electromagnetic interface (EMI) shielding performance (33.96 dB at only 71 um thickness) were fabricated and proved to be superior thermal interface materials for thermal management.