NaxMV(PO4)3 (M = Mn, Fe, Ni) Structure and Properties for Sodium Extraction

  • Weidong Zhou
  • , Leigang Xue
  • , Xujie Lü
  • , Hongcai Gao
  • , Yutao Li*
  • , Sen Xin
  • , Gengtao Fu
  • , Zhiming Cui
  • , Ye Zhu
  • , John B. Goodenough
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

344 Citations (Scopus)

Abstract

NASICON (Na+ super ionic conductor) structures of NaxMV(PO4)3 (M = Mn, Fe, Ni) were prepared, characterized by aberration-corrected STEM and synchrotron radiation, and demonstrated to be durable cathode materials for rechargeable sodium-ion batteries. In Na4MnV(PO4)3, two redox couples of Mn3+/Mn2+ and V4+/V3+ are accessed with two voltage plateaus located at 3.6 and 3.3 V and a capacity of 101 mAh g-1 at 1 C. Furthermore, the Na4MnV(PO4)3 cathode delivers a high initial efficiency of 97%, long durability over 1000 cycles, and good rate performance to 10 C. The robust framework structure and stable electrochemical performance makes it a reliable cathode materials for sodium-ion batteries.

Original languageEnglish
Pages (from-to)7836-7841
Number of pages6
JournalNano Letters
Volume16
Issue number12
DOIs
Publication statusPublished - 14 Dec 2016
Externally publishedYes

Keywords

  • Na transport
  • STEM
  • Sodium cathodes
  • framework oxide
  • manganese oxidation

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