access icon free Overcoming the supercooling of hydrated salts: three-dimensional graphene composite PCMs

Novel composite phase change materials (PCMs) based on three-dimensional reduced graphene oxide (3D-rGO) were fabricated. Both borax (Na2B4O7·10H2O) and 3D-rGO were used to reduce the supercooling degree of sodium sulphate decahydrate. The T-history method was used in studying the effect of Na2B4O7·10H2O and 3D-rGO on supercooling of PCM. It was found that both borax and 3D-rGO can reduce the supercooling degree of the composite PCMs, and the positive synergy effect between 3D-rGO and Na2B4O7·10H2O is significant. These results provide valuable guidance for improving the phase transition properties of hydrated salts.

Inspec keywords: nanofabrication; thermal energy storage; supercooling; phase change materials; nanocomposites; graphene compounds; sodium compounds

Other keywords: hydrated salts; composite phase change materials; borax; CO-Na2B4O7(H2O); sodium sulphate decahydrate; three-dimensional graphene composite PCM; supercooling degree; Na2B4O7·10H2O; T-history method; three-dimensional reduced graphene oxide; phase transition properties

Subjects: Other methods of nanofabrication; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Structure of graphene and graphene-related materials; Storage in thermal energy

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