Enhanced comprehensive performance of polyethylene glycol based phase change material with hybrid graphene synthesized by ball milling

Abstract

The stickiness of acacia gum was used to assist in the ball milling of graphite in aqueous media. Graphite is successfully exfoliated through a “sticky tape” mechanism, to give a 2.06mgmL11 aqueous dispersion of graphene. PEG6000 doped with 0.4wt% of as-prepared graphene nanosheets (GN) exhibited obviously growing enthalpies and increasing thermal conductivity by 260% over pure PEG6000.