Core–shell structured Na3V2(PO4)3/C nanocrystals embedded in multi-walled carbon nanotubes: A high-performance cathode for sodium-ion batteries
| Autor: | Caibo Yue, Zhaolian Chu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nanocomposite
Materials science Scanning electron microscope Nanotechnology 02 engineering and technology General Chemistry Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Cathode 0104 chemical sciences law.invention symbols.namesake Chemical engineering law Transmission electron microscopy Electrode symbols General Materials Science 0210 nano-technology Hybrid material Raman spectroscopy |
| Zdroj: | Solid State Ionics. 287:36-41 |
| ISSN: | 0167-2738 |
| DOI: | 10.1016/j.ssi.2015.07.024 |
| Popis: | In this work, we study the synthesis and electrochemical performance of Na3V2(PO4)3/C and multi-walled carbon nanotubes (MWCNTs) hybrid nanocomposite for use as cathode material in high performance sodium-ion batteries. This nanostructured hybrid material is prepared through a hydrothermal-assisted sol–gel process followed by thermal annealing. The obtained sample has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Raman spectrum. The crosslinked MWCNTs can provide good electronic conductive pathways interconnecting Na3V2(PO4)3/C particles. Electrode fabricated from this hybrid material delivers a high reversible capacity and superior rate performance up to an extremely high rate of 10 C. Moreover, ultralong cycling stability is also attained through 500 cycles at 10 C with 93.9% capacity retention. These results demonstrate that the addition of MWCNTs is an effective way to improve the electrochemical performance of Na3V2(PO4)3/C cathode material for sodium-ion batteries. |
| Databáze: | OpenAIRE |
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