Journal
BATTERIES & SUPERCAPS
Volume 3, Issue 1, Pages 52-55Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/batt.201900147
Keywords
high-voltage cathodes; cathode materials; Na3V2(PO4)(2)F-3; intercalation; sodium-ion batteries
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Na3V2(PO4)(2)F-3 (NVPF) is a promising cathode material for sodium ion batteries, owing to its high voltage and promising cycling profile. Nevertheless, most previous reports demonstrated only approximately 100 mAh g(-1) at limited operating voltage. Using a solvothermal synthesis route, we synthesized the NVPF cathode with a controlled architecture and spherical morphology. We used this electrode as the cathode for a sodium-ion battery and managed to intercalate/deintercalate the third Na+ ion from the structure, demonstrating a high specific capacity (197 mAh g(-1)). Long-term stability challenges of these electrodes under a wide potential regime are also presented here in.
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