Sodium-ion battery
Also known as: Na-ion
A rechargeable battery chemistry that uses sodium as the charge carrier — an element roughly 1,000 times more abundant in the earth's crust than lithium. Sodium ions move between a cathode and a hard carbon anode during charge and discharge, the same working principle as lithium-ion but with different electrode materials.
In energy storage
Sodium-ion cells retain usable capacity at temperatures well below 0°C, making them a potential fit for BESS in cold climates where LFP performance degrades. Current cycle life (~3,000 cycles) and energy density (~90–160 Wh/kg) lag behind LFP, limiting utility-scale adoption for now, but cell costs are expected to fall as manufacturing scales.
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