Abstract
Nanocomposite materials, Na3V2(PO4)3/C and Na3V2(PO4)3/C/Ag, were synthesized by a modified Pechini method. Their properties were characterized with the use of the X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, elemental analysis, Raman spectroscopy, impedance spectroscopy, and charge-discharge tests as cathode materials for sodium-ion batteries. The discharge capacity of Na3V2(PO4)3/C obtained at 600 °C was 116.1 and 75 mAh g−1 at a current density of 11 (0.1 C) and 110 mA g−1 (1 С) in the potential range of 2.7–3.8 V. The high capacity values for fast charge/discharge were achieved as a result of heat treatment by two steps and incorporation of appropriate amount of silver particles into Na3V2(PO4)3/C nanocomposite. The discharge capacities of thus obtained Na3V2(PO4)3/C with 0.2 wt% of Ag were 117.2, 112.5, and 83.5 mAh g−1 at the current densities of 11, 110, and 880 mA g−1. This experimental evidence reveals the great potential of NVP/C/Ag synthesized by the modified Pechini method as cathode materials for the production of sodium-ion batteries.
Original language | English |
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Pages (from-to) | 1615-1624 |
Number of pages | 10 |
Journal | Journal of Solid State Electrochemistry |
Volume | 21 |
Issue number | 6 |
DOIs | |
State | Published - 1 Jun 2017 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2017, Springer-Verlag Berlin Heidelberg.
Funding
This work was financially supported by the Russian Foundation for Basic Research and Moscow Government (project no. 15-38-70042). In this work, we used the equipment of the Joint Research Center of IGIC RAS.
Funders | Funder number |
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Russian Foundation for Basic Research and Moscow Government | 15-38-70042 |
Keywords
- Cathode materials
- NaV(PO)
- Sodium-ion batteries