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A sodium-rich vanadium compound, Na4V2O7, is investigated as a cathode material for sodium-ion batteries, which delivers a high reversible capacity of 194 mA h g-1 after activating to 4.7 V.… Click to show full abstract
A sodium-rich vanadium compound, Na4V2O7, is investigated as a cathode material for sodium-ion batteries, which delivers a high reversible capacity of 194 mA h g-1 after activating to 4.7 V. By limiting the cut-off voltage to 4.4 V, a good capacity retention of 93% after 50 cycles is achieved. The material exhibits a negligible volume variation of 1.04% during Na+ (de-)intercalation, demonstrating that Na4V2O7 is structurally-stable.
Keywords:
structurally stable;
reversible capacity;
capacity;
cathode material;
high reversible
Journal Title: Chemical communications
Year Published: 2020
Link to full text (if available)
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Journal Title: Chemical communications
Year Published: 2020
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!