Graphene/carbon black hybrid films were prepared by a simple vacuum filtration method.The supercapacitor maintained perfect rectangular shape even at high scan rate of 5Vs1.The supercapacitor remained 61.3% capacitance when the scan rates increased from 0.005 to 5Vs1.The solid-state flexible ...
40d [416]. The graphene under and around the Cu NPs will be dissociated by the Cu NPs and then reacted with H2 to form methane through the local catalytic hydrogenation of carbon, leaving plenty of hole rims around the Cu NPs. After removing the Cu NPs, the GNM is formed. In these ...
The XRD results of different Ca-adsorbed samples were almost the same as that of pure carbon black, disclosing no corresponding diffraction peak of Ca nanoparticles (Fig. 6d), which are consistent with AC-HAADF-STEM images and XPS results, indicating the successful preparation of various doped-...
Graphene is an advanced carbon functional material with inherent unique properties that make it suitable for a wide range of applications. It can be synthesized through either the top–down approach involving delamination of graphitic materials or the bo
Oxygen-rich functional groups of GQDs gave rise to a tightly packed structure between carbon black and sulphur, enabling fast charge transfer. Moreover, experimental observations and theoretical analysis helped to clarify the role of GQDs. In particular, the introduction of GQDs significantly was ...
The black and red traces show the THz signals measured by electro-optic sampling (EOS) for two different thicknesses of the CdTe crystal, as a function of delay time between the optical pump and probe. The inset shows the THz signal peaks measured after a round-trip inside the crystal [...
alsosuggeststhatthestudiedcatalystsareabletotraditionalcarbonblackandPt/Ccatalysts.Anoptimal catalyzethedecompositionofLi2O2duringthechar-temperatureforheattreatmentduringsynthesisis gingprocess,duetotheabsenceofLiOinthecriticaltocreatingahigh-surface-areacatalystwithI ...
and efficient sterilization method. In the presence of an external NIR light source, PTT materials convert light energy into heat energy to kill cells. The most commonly used PTT materials include metal nanoscale materials, such as gold, silver, palladium, copper NPs, graphene and carbon nanotubes...
Red phosphorus-black phosphorus /expended graphite 0.1 mol L−1 KOH solution(a scan rate of 10 mV s−1 and1600 rpm) / / 0.328 58 OER 78 Mechanical method(grinding) Co, N-doped carbon nanocages 0.1 mol L−1 KOH solution(a scan rate of 10 mV s−1 and1600 rpm) 0.924 / / /...
Various graphene-based nano-composites (such as graphene/carbon composites, graphene/metal-based composites) have been designed to alleviate the passive performance (Fig. 2c) [70]. Generally, the combination of graphene with the other materials may construct a highway of electron/ion transfer and...