Green synthesis of Co3O4/graphene nanocomposite as cathode for magnesium batteries
| Autor: | E.M. Kamar, Eslam Sheha |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Nanomaterials law.invention law sem General Materials Science Materials of engineering and construction. Mechanics of materials Nanocomposite nanocomposite Magnesium Graphene Mechanical Engineering Graphene foam electrochemical properties 021001 nanoscience & nanotechnology Condensed Matter Physics Cathode magnesium batteries 0104 chemical sciences chemistry Mechanics of Materials TA401-492 0210 nano-technology |
| Zdroj: | Materials Science-Poland, Vol 35, Iss 3, Pp 528-533 (2017) |
| ISSN: | 2083-134X |
| DOI: | 10.1515/msp-2017-0076 |
| Popis: | Ultrafine Co3O4nanoparticles homogeneously attached to graphene sheets by sonochemical method have been demonstrated as a promising cathode material for magnesium batteries. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) have been employed to characterize the structural properties of this material. SEM analyses clearly confirmed that the Co3O4nanoparticles have been uniformly coated on the entire surface of graphene sheets to form a compact composite. The Co3O4-graphene nanocomposite was employed as a cathode electrode in magnesium-ion batteries, and their electrochemical properties were briefly investigated. The graphene sheets can also effectively buffer the volume change in Co3O4upon magnesium insertion/extraction, thus improving the cycling preformance of the composite electrode. It was revealed that the Co3O4-graphene composite can provide a small capacity of 16 mAh·g-1using a new nonaqueous electrolyte that is tetrahydrofuran-free, which provides a new direction to explore cathode materials for Mg batteries. |
| Databáze: | OpenAIRE |
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