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Graphene oxide nanosheets are used as a support to anchor metal ions and produce graphene–metal nanoparticle hybrids in a sol–gel method. The influence of experimental conditions on the features of graphene-supported Pt, Ir, and Pt-Ir alloy nanoparticles is studied using transmission electron microscopy. Good dispersion of metal nanoparticles on the graphene sheets are observed for the catalysts heat-treated...
First-principles calculations are used to analyze the phase stability, formation energy, and Li intercalation potential for a series of layered cathode materials. The calculations show LiNi 0.66 Co 0.17 Mn 0.17 O 2 as a promising cathode for lithium-ion batteries. The layer-structured LiNi 0.66 Co 0.17 Mn 0.17 O 2 is prepared via wet...
Graphene-supported Pt and Pt 3 M (M=Co and Cr) alloy nanoparticles are prepared by ethylene glycol reduction method and characterized with X-ray diffraction and transmission electron microscopy. X-ray diffraction depicted the face-centered cubic structure of Pt in the prepared materials. Electron microscopic images show the high dispersion of metallic nanoparticles on graphene sheets. Electrocatalytic...
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