Sodium-sulfur (NaS) batteries and lithium-ion (Li-ion) batteries both have notable energy densities, but they operate differently and have distinct advantages.
Energy Density Comparison:
- Sodium-Sulfur (NaS) Batteries:
- Volume basis: 300-400 Wh/L.
- Mass basis: Approximately 206-367 Wh/kg.
- Lithium-Ion (Li-ion) Batteries:
- Typically range from 100-265 Wh/kg for most commercial types.
Key Differences:
- Operating Temperature: NaS batteries require high temperatures (300-350°C) to function, which can lead to heat-related energy losses and safety concerns. Li-ion batteries operate at much lower temperatures near room conditions.
- Materials Cost and Availability: NaS batteries use abundant and inexpensive materials like sodium and sulfur, whereas Li-ion batteries rely on more expensive and less abundant lithium.
- Applications: NaS batteries are primarily suited for stationary energy storage due to their high operating temperatures, while Li-ion batteries are versatile and widely used in both portable and stationary applications.
In summary, NaS batteries can offer higher energy densities than many Li-ion batteries, especially on a volume basis, but their operational requirements and limitations restrict their use primarily to large-scale stationary applications.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-do-the-energy-densities-of-sodium-sulphur-batteries-compare-to-those-of-lithium-ion-batteries/
