Tailored interphase and thermal interface resistance of self‐assembled thermally reduced graphene oxide–polyamide hybrid/epoxy composites with enhanced thermal conductivity

2019 ◽  
Vol 136 (31) ◽  
pp. 47826 ◽  
Author(s):  
Bo Li ◽  
Di Wu ◽  
Kangyi Lu ◽  
Peng Xu ◽  
Gang Li ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Epoxy Composites ◽  
Thermal Interface ◽  
Interface Resistance ◽  
Thermal Interface Resistance ◽  
Reduced Graphene ◽  
Self Assembled ◽  
Enhanced Thermal Conductivity

scholarly journals Globular Flower-Like Reduced Graphene Oxide Design for Enhancing Thermally Conductive Properties of Silicone-Based Spherical Alumina Composites

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 544
Author(s):  
Weijie Liang ◽  
Tiehu Li ◽  
Xiaocong Zhou ◽  
Xin Ge ◽  
Xunjun Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Thermal Interface Materials ◽  
Thermal Interface ◽  
Reduced Graphene ◽  
The Matrix ◽  
Thermally Conductive ◽  
Interface Materials ◽  
Spherical Alumina

The enhancement of thermally conductive performances for lightweight thermal interface materials is a long-term effort. The superb micro-structures of the thermal conductivity enhancer have an important impact on increasing thermal conductivity and decreasing thermal resistance. Here, globular flower-like reduced graphene oxide (GFRGO) is designed by the self-assembly of reduced graphene oxide (RGO) sheets, under the assistance of a binder via the spray-assisted method for silicone-based spherical alumina (S-Al2O3) composites. When the total filler content is fixed at 84 wt%, silicone-based S-Al2O3 composites with 1 wt% of GFRGO exhibit a much more significant increase in thermal conductivity, reduction in thermal resistance and reinforcement in thermal management capability than that of without graphene. Meanwhile, GFRGO is obviously superior to that of their RGO counterparts. Compared with RGO sheets, GFRGO spheres which are well-distributed between the S-Al2O3 fillers and well-dispersed in the matrix can build three-dimensional and isotropic thermally conductive networks more effectively with S-Al2O3 in the matrix, and this minimizes the thermal boundary resistance among components, owning to its structural characteristics. As with RGO, the introduction of GFRGO is helpful when decreasing the density of silicone-based S-Al2O3 composites. These attractive results suggest that the strategy opens new opportunities for fabricating practical, high-performance and light-weight filler-type thermal interface materials.

scholarly journals Polyimide nanocomposites with reduced graphene oxide for enhanced thermal conductivity and tensile strength

2020 ◽  
Vol 6 (12) ◽  
pp. 125346 ◽  
Author(s):  
Lianru Ma ◽  
Yanxiang Wang ◽  
Yaoyao Wang ◽  
Chengguo Wang ◽  
Guangshan Zhuang
Keyword(s):  
Thermal Conductivity ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Enhanced Thermal Conductivity

scholarly journals Enhanced thermal conductivity in a hydrated salt PCM system with reduced graphene oxide aqueous dispersion

RSC Advances ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 1022-1029 ◽  
Author(s):  
Xinxing Zhang ◽  
Xiang Li ◽  
Yuan Zhou ◽  
Chunxi Hai ◽  
Yue Shen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Aqueous Dispersion ◽  
Hydrated Salt ◽  
Reduced Graphene ◽  
Enhanced Thermal Conductivity

We prepared r-GO/CaCl2·6H2O by r-GO aqueous dispersion to enhance the thermal conductivity of a hydrated salt PCM.

Transparent self-assembled films of reduced graphene oxide platelets

2009 ◽  
Vol 95 (10) ◽  
pp. 103104 ◽  
Author(s):  
Yanwu Zhu ◽  
Weiwei Cai ◽  
Richard D. Piner ◽  
Aruna Velamakanni ◽  
Rodney S. Ruoff
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Self Assembled

Hybrid Supercapacitors Based on Self-Assembled Electrochemical Deposition of Reduced Graphene Oxide/Polypyrrole Composite Electrodes

2021 ◽  
Vol 16 (6) ◽  
pp. 949-956
Author(s):  
Jun Ma ◽  
Junaid Ali Syed ◽  
Dongyun Su
Keyword(s):  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Electrochemical Deposition ◽  
High Energy ◽  
Carbon Cloth ◽  
Discharge Process ◽  
Rate Performance ◽  
Reduced Graphene ◽  
Self Assembled

Conductive polymers (CPs) have potential application to commercial energy storage because of their high electrochemical activity and low cost. However, an obstacle in developing CP-based supercapacitors is the degradation in their capacitance during the charge-discharge process that leads to poor rate performance. This study fabricates layers of a high-performance self-assembled polypyrrole/reduced graphene oxide (PPY/RGO) composite material on a carbon cloth through electrochemical deposition. The layered graphene improved the electrochemical properties of PPY. Carbon fiber rods were coated with the PPY/RGO composite layer, the thickness of which depends on the deposition time. Adequate capacitive behaviors were achieved by using 16 layers of polypyrrole/reduced graphene oxide, with a specific capacitance of 490 F g−1 (0.6 A g−1) and good rate performance. The results here provide a novel means of preparing graphene-based nanocomposites films for a variety of functions. A symmetric device was subsequently assembled by using electrodes featuring 16 layers of the polypyrrole/reduced graphene oxide composite. It yielded a specific capacitance of 205 F g−1 and a high energy density of 16.4 Wh kg−1. It also exhibited good cycle stability, with a capacitance retention rate of 85% for 5,000 cycles.

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