Na3V2(PO4)3/C/Ag nanocomposite materials for Na-ion batteries obtained by the modified Pechini method

Andrey Chekannikov, Roman Kapaev, Svetlana Novikova, Nataliya Tabachkova, Tatiana Kulova, Alexander Skundin, Andrey Yaroslavtsev

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

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 languageEnglish
Pages (from-to)1615-1624
Number of pages10
JournalJournal of Solid State Electrochemistry
Volume21
Issue number6
DOIs
StatePublished - 1 Jun 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017, Springer-Verlag Berlin Heidelberg.

Keywords

  • Cathode materials
  • NaV(PO)
  • Sodium-ion batteries

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