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Sodium-ion battery

Facts for Prelims (FFP)


Source: WION


Context: South Korean researchers have developed a high-power hybrid sodium-ion battery capable of charging in seconds, marking a potential breakthrough in energy storage technology.

  • Sodium, being nearly 1000 times more abundant than lithium, offers a cheaper and more feasible energy source.
  • This development suggests the battery could be a viable alternative to lithium-ion batteries, meeting increasing demands for low-cost energy storage devices with high energy density.


Feature Sodium-ion Batteries Lithium-ion Batteries
Cost Generally lower cost due to the abundance of sodium (Sodium is 500-1000 times more abundant than lithium). Higher cost due to the scarcity of lithium and its extraction process.
Energy Density Lower energy density compared to lithium-ion batteries. Higher energy density, providing more power in a smaller size.
Cycle Life Generally lower cycle life compared to lithium-ion batteries. Longer cycle life, retaining capacity over more charge-discharge cycles.
Safety Generally safer due to the less reactive nature of sodium. Generally safe but can be prone to thermal runaway under certain conditions.
Environmental Impact Sodium is more abundant and less harmful to the environment. Lithium extraction and disposal can have environmental consequences.
Application Suitable for large-scale energy storage and grid applications. Widely used in consumer electronics, electric vehicles, and portable devices.