Highly Thermoconductive, Strong Graphene-Based Composite Films by Eliminating Nanosheets Wrinkles.

ABSTRACT: Graphene-based thermally conductive composites have been proposed as effective thermal management materials for cooling high-power electronic devices. However, when flexible graphene nanosheets are assembled into macroscopic thermally conductive composites, capillary forces induce shrinkage of graphene nanosheets to form wrinkles during solution-based spontaneous drying, which greatly reduces the thermal conductivity of the composites. Herein, graphene nanosheets/aramid nanofiber (GNS/ANF) composite films with high thermal conductivity were prepared by in-plane stretching of GNS/ANF composite hydrogel networks with hydrogen bonds and π-π interactions. The in-plane mechanical stretching eliminates graphene nanosheets wrinkles by suppressing inward shrinkage due to capillary forces during dr

SUBMITTER: Xiao G 

PROVIDER: S-EPMC10656391 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature