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Dispersion of Graphene in water is conducive to their practical applications as lubricating additive in water-based fluids due to their safety, low cost and environmental-friendliness. But owing to its hydrophobicity, it is difficult to achieve stable aqueous graphene suspension. Here, we use the Toluene-2,4-diisocyanate as bridging agent between hydrophilic Poly (ethylene glycol) (PEG) and ethanolamine...
Low-cost synthesis and functionization of graphene is important for its application. Here, graphene and Fe3O4/graphene films were both prepared via a green approach of electrochemical exfoliation of graphite paper in aqueous Fe2(SO4)3. Iron ions in the electrolyte could facilitate graphite exfoliation and reduce hydrogen evolution in water medium as well as in-situ functionization of graphene. Small...
Three dimensional graphene networks (3DGNs) are promising electrode materials in electrochemical applications because they provide short diffusion pathways for electrolyte ions and fast transport channels for electrons, and act as an ideal scaffold for forming composites with pseudocapacitive materials to obtain a synergistic effect. This review offers an overview of recent advances in the synthesis...
We have demonstrated an environmentally friendly and efficient route for the reduction of graphene oxide by aluminum powder in only 30min. The highly reduced graphene oxide had been confirmed by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy and thermo gravimetric analysis. Furthermore, the bulk conductivity of the prepared graphene sheets is 2.1×10 3 S/m, which is...
We have prepared and evaluated the performance of natural graphite (NG)/agglomerated carbon nanotubes (ACNTs) composite materials for future mechanical dampening devices. The mechanical performance of a compressed mixture of NG and ACNTs was examined over the pressure range of 30–300MPa. NG–ACNT composite materials showed improved performance over the ACNT materials alone. Nanocomposites containing...
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