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High-rate intercalation capability of NaTi 2 (PO 4 ) 3 /C composite in aqueous lithium and sodium nitrate solutions

Journal of Power Sources, ISSN: 0378-7753, Vol: 288, Page: 176-186
2015
  • 66
    Citations
  • 0
    Usage
  • 40
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    66
    • Citation Indexes
      66
  • Captures
    40

Article Description

The nanodispersed NaTi 2 (PO 4 ) 3 /C composite containing 20–25 wt.% of in-situ formed carbon, was synthesized by gel combustion procedure followed by a heat treatment at 650, 700 and 750 °C. The samples calcined at 700 and 750 °C displayed crystalline nasicon structure. They were subjected to the investigation of intercalation/deintercalation kinetics in aqueous NaNO 3 and LiNO 3 solutions, using cyclic voltammetry and galvanostatic charging/discharging measurements. As regards to the effect of electrolyte composition, the reactions were evidenced to be roughly twice faster in sodium nitrate than in lithium nitrate solution. Among the samples treated at 700 and 750 °C, better performance was evidenced for the sample treated at lower temperature. Coulombic capacity in NaNO 3 solution at charging rate 1C amounted to ∼70 mAh g −1 and ∼55 mAh g −1 for the sample calcined at 700 and 750 °C, respectively, and displayed surprisingly slight dependence on charging rate up to even 100C.

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