Sodium-Ion Cell Characteristics

Sodium-ion cells are in the very early stages of mass production, with the first commercial systems being available for purchase in 2023. Some typical characteristics of sodium-ion cells include:

  • An energy density of 100 to 160 Wh/kg and 290Wh/L at cell level.
  • A voltage range of 1.5 to 4.3V. Note that cells can be discharged down to 0V and shipped at 0V, increasing safety during shipping.
  • 20-30% lower cell BOM cost than LFP.
  • A wider operating temperature than lithium-ion cells (-20°C to +60°C).
  • Typical Energy efficiency 92% at C/5.

The table below provides an overview of some of the companies working around Sodium-ion battery production, and details of their chosen cell designs:

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