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A type of sandwich-type and mesoporous CoS-based coaxial nanocables with conductive CNT backbone core, well-confined CoS nanoparticle interlayer and conformal carbon coating shell (denoted as CNT@CoS@C) are developed through a bottom-up method and investigated as potential anode materials for sodium/lithium ion storage. The rationally constructed architecture successively achieves the integration...
The effect of carbon source crystallite size on the formation of hafnium carbide (HfC) coating was investigated via direct reaction of hafnium powders with mesophase pitch-based carbon fibers (CFs) heat-treated at various temperatures. X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy analyses reveal that uniform and dense HfC coatings are preferentially formed...
The formation and growth of silicon carbide whiskers (SiCw) have been investigated by reaction of silicon sources at 1400 °C with pitch-based carbon fibers possessing various microstructures. Isotropic and anisotropic pitch-based carbon fibers treated at various temperatures were employed as carbon sources. Silicon sources include silicon powder and a mixture of silicon and silica powder. The reaction...
Direct methanol fuel cell (DMFC) electrode catalysts with improved electrochemical properties have been prepared by dispersing platinum–tin (Pt–Sn) nanoparticles onto graphene sheets. During the deposition, a majority of the oxygenated functional groups on the graphene oxide nanosheets were removed, resulting in the formation of graphene. Microstructural characterization shows that metallic Pt, Pt–Sn...
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