Enhanced Na+ diffusion in Na3V2(PO4)2F2O cathodes via Zr4+ doping for high-rate and long-cycling sodium batteries

Sodium vanadium oxyfluorophosphate is a class of high-stability, high-capacity and high-voltage cathode materials for sodium ion batteries. But its practical performance is severely constrained by the low electric conductivity. In this paper, high-valence Zr4+ is designed and applied to improve the...

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Bibliographic Details
Published in:Journal of alloys and compounds 2023-06, Vol.945, p.169314, Article 169314
Main Authors: Sun, Xiaofei, Ndahimana, Anastase, Wang, Zikang, Mei, Xuesong, Liu, Bin, Gao, Guoxin, Xiong, Lilong, Wang, Haitao, Wang, Wenjun
Format: Article
Language:English
Subjects:
Cathode
Energy storage
Sodium battery
Sodium vanadium oxyfluorophosphate
Zirconium doping
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Summary:Sodium vanadium oxyfluorophosphate is a class of high-stability, high-capacity and high-voltage cathode materials for sodium ion batteries. But its practical performance is severely constrained by the low electric conductivity. In this paper, high-valence Zr4+ is designed and applied to improve the electrochemical performance of Na3V2(PO4)2F2O (NVPFO). A series of Na3V2−xZrx(PO4)2F2O (0 ≤x 
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2023.169314