Open AccessOvercoming the supercooling of hydrated salts: three‐dimensional graphene composite PCMs
Author(s) -
Wang Ya,
Cao Liu,
Zhang Dong
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.0044
Subject(s) - supercooling , borax , graphene , materials science , composite number , oxide , chemical engineering , phase change , phase (matter) , degree (music) , composite material , nanotechnology , metallurgy , chemistry , thermodynamics , organic chemistry , raw material , physics , acoustics , engineering
Novel composite phase change materials (PCMs) based on three‐dimensional reduced graphene oxide (3D‐rGO) were fabricated. Both borax (Na 2 B 4 O 7 ·10H 2 O) 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 Na 2 B 4 O 7 ·10H 2 O 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 Na 2 B 4 O 7 ·10H 2 O is significant. These results provide valuable guidance for improving the phase transition properties of hydrated salts.