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Butyric anhydride (BA) was applied as an electrolyte additive in NaNi1/3Fe1/3Mn1/3O2 (NaNFMO)/Na half-cell to explore how it affects the cell’s electrochemical behavior and its role in the NaNFMO cathode interface. The results delivered that when using the 0.5 wt% BA-containing electrolyte, The NaNFMO/Na cell achieved a 68.1% capacity retention, outperforming the baseline electrolyte by 8.1% after 100 cycles at 0.5C. Moreover, BA also improved the discharge capacities of the NaNFMO/Na cell at various rates (0.1–2C). Further analysis revealed that the presence of BA additive enabled the formation of a durable and uniform surface film on NaNFMO cathode, suppressing continuous electrolyte decomposition and thereby enhancing the battery’s electrochemical performance.

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Constructing Stable Electrode/Electrolyte Interfaces for Sodium-Ion Battery by Using Butyric Anhydride Additive

  • 会议论文

  • 发表日期：

    2026年

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  • Aijia Wei,
  • Peng Liu,
  • Rui He

摘要

Butyric anhydride (BA) was applied as an electrolyte additive in NaNi1/3Fe1/3Mn1/3O2 (NaNFMO)/Na half-cell to explore how it affects the cell’s electrochemical behavior and its role in the NaNFMO cathode interface. The results delivered that when using the 0.5 wt% BA-containing electrolyte, The NaNFMO/Na cell achieved a 68.1% capacity retention, outperforming the baseline electrolyte by 8.1% after 100 cycles at 0.5C. Moreover, BA also improved the discharge capacities of the NaNFMO/Na cell at various rates (0.1–2C). Further analysis revealed that the presence of BA additive enabled the formation of a durable and uniform surface film on NaNFMO cathode, suppressing continuous electrolyte decomposition and thereby enhancing the battery’s electrochemical performance.