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As sodium-ion battery technology matures, understanding how it compares to the dominant lithium-ion technology becomes increasingly important for engineers, investors, and decision-makers. This article provides a detailed comparison across multiple dimensions.
Performance Comparison
| Parameter | Sodium-ion | Lithium-ion |
|---|---|---|
| Energy Density | 120-200 Wh/kg | 200-300 Wh/kg |
| Cycle Life | 3,000-6,000 cycles | 4,000-10,000 cycles |
| Operating Temp | -30°C to 60°C | -20°C to 55°C |
| Safety | Excellent | Good |
Cost Analysis
Sodium-ion batteries have the potential to be 20-30% cheaper than lithium-ion at scale, primarily due to the abundance and low cost of sodium raw materials. No cobalt or lithium means reduced supply chain risks and geopolitical concerns.
Ideal Applications
Sodium-ion batteries are particularly well-suited for stationary energy storage, grid-level applications, low-speed electric vehicles, and backup power systems where energy density requirements are moderate but cost and safety are prioritized.
