Electric vehicles: New sodium battery from Korea

DAEJEON – Electromobility has achieved a decisive breakthrough: Korean researchers have developed groundbreaking technology that could revolutionize the charging of electric vehicles.

The new cell chemistry was developed by the Korea Institute of Science and Technology (KAIST), one of the most prestigious research institutions in the high-tech country.

The new sodium battery promises ultra-fast charging times and could significantly alleviate the range anxiety of many potential customers.

How does the sodium battery work?

The sodium battery is based on the rocking chair mechanism, similar to lithium-ion batteries. However, instead of lithium ions, sodium ions are used here to store and release energy. During charging, sodium ions migrate through the electrolyte and deposit on the negative electrode. During discharge, the sodium ions return to the positive electrode, releasing energy in the process.

Advantages of the sodium battery:

  1. Cost-effective production: Sodium is widely available worldwide and cheaper than lithium used in most lithium-ion batteries. Therefore, production costs for sodium batteries are significantly lower.
  2. Environmentally friendly: Unlike lithium, sodium salts are readily available and can be extracted from natural salt deposits or seawater. The extraction process is less environmentally harmful.
  3. Durability: Sodium-ion batteries are considered durable. They need to be replaced less frequently, reducing environmental impact through disposal.
  4. Resistance to temperature fluctuations: Sodium is less susceptible to overheating and can still utilize a significant portion of stored energy even in cold conditions.

The future of electromobility:

The sodium battery could elevate electromobility to a new level. With ultra-fast charging times and sustainable production, it presents a promising alternative to conventional lithium-ion batteries. Range anxiety could soon be a thing of the past, making electric vehicles even more attractive to potential customers.  (zai)