Graphene-Assisted Thermal Interface Materials with a Satisfied Interface Contact Level Between the Matrix and Fillers

Abstract

Reduced graphene oxide (RGO) and three-dimensional graphene networks (3DGNs) are adopted to improve the performance of thermal interface materials (TIMs). Therein, the 3DGNs provide a fast transport network for phonons, while the RGO plays as a bridge to enhance the phonon transport ability at the interface between the filler and matrix. The types of surface functional groups of the RGO are found to exert a remarkable influence on the resulting thermal performance; the carboxyl groups are found in the optimal selection to promote the transport process at the interface area because a strong chemical bond will form between the graphene basal plane and epoxy resin (ER) through this kind of group. The resulting thermal conductivity reaches 6.7 Wm−1 K−1 after optimizing the mass fraction and morphology of the filler, which is 3250% higher than that of the pristine ER. Moreover, the mechanical properties of these as-prepared TIMs are also detected, and the specimens by using the RGO(OOH) filler display the better performances.Electronic supplementary materialThe online version of this article (10.1186/s11671-018-2704-1) contains supplementary material, which is available to authorized users.

Allotrope carbon materials in thermal interface materials and fuel cell applications: A review

“…They proposed the application of the composite for thermal conductivity enhancement for microencapsulated phase change materials. Moreover, this hybridization affected the thermal conductivity of PCM by 195%, thereby providing good thermal stability and thermal reliability . Another research utilized graphene derivatives and CNT due to their superior properties .…”

“…Carbon buffer layer used in the study of Kang et al has had a positive effect on DMFC performance. Methanol crossover reduced effectively because carbon buffer layer physically blocked methanol.…”

“…Moreover, this hybridization affected the thermal conductivity of PCM by 195%, thereby providing good thermal stability and thermal reliability. 115 Another research utilized graphene derivatives and CNT due to their superior properties. [116][117][118] In comparison with PCM, silicone thermal grease was improved throughout the structure.…”

“…These features will enhance the active site for nanoparticle catalyst to adhere and enhance the reactant mass transport. Xie et al 37 stated that mass transfer in the fuel cell system is very effective in the presence of Carbon buffer layer used in the study of Kang et al 115 has had a positive effect on DMFC performance. Methanol crossover reduced effectively because carbon buffer layer physically blocked methanol.…”

Three-dimensional graphene networks and RGO-based counter electrode for DSSCs

“…Defect density can be roughly dened as (1/L a ) 2 in cm À2 . [30][31][32] The results we calculated were based on the I G /I D ratios from various proles, and are listed in the Table 2. For the 3DGNs, the D peak almost disappeared, indicative of low defect density and good continuity, which would favor the formations of channels enabling fast transport of electrons.…”