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In this paper, carbon paper as positive electrode for vanadium redox flow battery was etched by chlorosulfonic acid with assistance of ultrasonication. Carbon layer-exfoliated, wettability-enhanced, SO3H-functionalized carbon paper was successfully achieved by facile treatment. The electrochemical kinetics of VO2+/VO2+ redox reaction on carbon paper was significantly improved after the treatment....
The extent of oxidation of graphite oxide (GO) was tailored by adjusting the amount of oxidant during oxidation. The characteristics of GOs with different degrees of oxidation and their corresponding exfoliated GO nanosheets (GONS) were investigated. It was found that the less oxidized GONS possessed 3–4 layers with much fewer structural defects. Mechanical testing of the resultant poly(vinyl alcohol)-based...
The buckling and fracture modes of thick (diameter >20nm) multiwall carbon nanotubes (MWCNTs) under compressive stress were examined using in situ transmission electron microscopy. The overall dynamic deformation processes of the MWCNTs as well as the force/distance curves can be obtained. The buckling behavior of MWCNTs under compression falls into two categories, the first is non-axial buckling...
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