Structural characteristic of vanadium(V) oxide/sulfur composite cathode for magnesium battery applications
| Autor: | Eslam Sheha, E.M. Kamar |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
chemistry.chemical_element 02 engineering and technology 010402 general chemistry Magnesium battery 01 natural sciences Nanomaterials chemistry.chemical_compound sem lcsh:TA401-492 General Materials Science Composite cathode v2o5 Mechanical Engineering Vanadium(V) oxide 021001 nanoscience & nanotechnology Condensed Matter Physics Sulfur magnesium batteries 0104 chemical sciences Chemical engineering chemistry Mechanics of Materials lcsh:Materials of engineering and construction. Mechanics of materials conductivity 0210 nano-technology |
| Zdroj: | Materials Science-Poland, Vol 37, Iss 4, Pp 570-576 (2019) |
| ISSN: | 2083-134X |
| DOI: | 10.2478/msp-2019-0079 |
| Popis: | Magnesium batteries are regarded as promising candidates for energy storage devices owing to their high volumetric capacity. The practical application is hindered, however, by strong electrostatic interactions between Mg2+ and the host lattice and due to the formation of a passivation layer between anode and electrolyte. V2O5 is a typical intercalation compound with a layered crystal structure ((0 0 1) interlayer spacing ~ 11.53 Å), which can act as a good host for the reversible insertion and extraction of multivalent cations. Herein, we have presented an investigation of the effects of S injection on the structure, electrochemical performance and Mg2+ diffusion in V2O5 cathode materials for Mg-ion batteries. The V2O5/S composite structure was investigated using X-ray diffraction, field-emission scanning electron microscope and energy dispersive X-ray spectroscopy. The integrated electrode exhibits an improvement in the electrical and electrochemical properties compared to the V2O5 electrode. The as-prepared V2O5/S composite has an initial discharge capacity of 310 mAh g−1 compared to 160 mAh g−1 for the V2O5 electrode. The V2O5/S composite is a promising cathode material for magnesium-ion battery applications. |
| Databáze: | OpenAIRE |
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