High-Yield Continuous-Flow Synthesis of Spheroidal C@Graphene Composites as Supercapacitors.
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ID: 67272
2019
Graphene spheres confining fullerene C are quantitatively formed under high-shear and continuous-flow processing using a vortex fluidic device (VFD). This involves intense micromixing a colloidal suspension of graphite in DMF and an -xylene solution of C at room temperature in the absence of surfactants and other auxiliary substances. The diameters of the composite spheres, C@graphene, can be controlled with size distributions ranging from 1.5 to 3.5 μm, depending on the VFD operating parameters, including rotational speed, flow rate, relative ratio of C to graphite, and the concentration of fullerene. An electrode of the composite material has high cycle stability, with a high areal capacitance of 103.4 mF cm, maintaining its capacitances to 24.7 F g and 86.4 mF cm (83.5%) at a high scan rate of 100 mV s.
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| Authors | Alsulam, Ibrahim K;Alharbi, Thaar M D;Moussa, Mahmoud;Raston, Colin L; |
| Journal | ACS omega |
| Year | 2019 |
| DOI | 10.1021/acsomega.9b02656 |
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