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Title: Impacts of fluorine in NASICON‐type materials as cathodes for aqueous zinc ion batteries
Abstract Sodium superionic conductor (NASICON)‐type materials are getting more and more attention due to their high capacity and good cycling ability compared with other cathode materials in aqueous zinc ion batteries (AZIB). The present paper was to study the synthesis and electrochemical properties of two NASICON compounds of Na3V2(PO4)3and Na3V2(PO4)2F3and to understand the impacts of fluorine. Both Na3V2(PO4)3and Na3V2(PO4)2F3are synthesized by hydrothermal growth followed with annealing at 800°C in inert gas. With 3 mol/L Zn(CF3SO3)2in water as electrolyte, Na3V2(PO4)3offered a high storage capacity, while Na3V2(PO4)2F3demonstrated a high discharge voltage though low storage capacity. It was also found that the storage capacity of Na3V2(PO4)2F3increases with increased cycles; however, the compound undergoes a gradual phase transition. It is discussed possible approaches to attain both high discharge voltage and large capacity with good cycling stability.  more » « less
Award ID(s):
1803256
PAR ID:
10450677
Author(s) / Creator(s):
 ;  ;  
Publisher / Repository:
Wiley Blackwell (John Wiley & Sons)
Date Published:
Journal Name:
Energy Science & Engineering
Volume:
9
Issue:
7
ISSN:
2050-0505
Format(s):
Medium: X Size: p. 938-949
Size(s):
p. 938-949
Sponsoring Org:
National Science Foundation
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