Open AccessPreparation and Electro-thermal Properties of Low Voltage DC Driven Graphene Electro-thermal Film
Author(s) -
Shidong Wang,
Bohong Gu,
Shiqing Sun,
Weiwu Zou,
Peiyan Yang,
Haoqi Zhao,
Xin Li
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/585/1/012037
Subject(s) - graphene , graphite , materials science , raman spectroscopy , graphene foam , graphene oxide paper , composite material , thermal , nanotechnology , optics , physics , meteorology
Exfoliated graphene were prepared by supercritical carbon dioxide fluid stripping and electro-thermal film with graphite and exfoliated graphene ware prepared and then studied by SEM and Raman spectroscopy. The results show the graphene sheets are exfoliated from the graphite blocks with a size of 3-10μm after stripping. The graphene existed in sheet in the electro-thermal film while graphite was blocks, which caused the graphene oriented and the conductive network more abundant and effective. The power of graphene electro-thermal film reduced by 22.5% compared with graphite electro-thermal film to reach the same space temperature under 12V, and the film temperature decreased by 9.623 °C, the comprehensive heat transfer coefficient is 2.60×10 -3 W·cm -2 ·°C -1 , And the heating rate of the graphene electro-thermal film rapidly increase and the temperature rise time greatly decrease. The initial heating rate of graphene electro-thermal film is 19.3 times of that of the graphite electro-thermal film, and the temperature rise time decreased to 24.7%.