2000 km range lithium-air battery from CATL

Range anxiety is still one of the biggest obstacles in electric cars. CATL, the world's largest battery manufacturer, is working on lithium-air batteries that can travel up to 2000 km on a single charge. However, behind this figure is not a product, but a theoretical calculation in the laboratory.

Why is the CATL lithium-air battery so ambitious?

The theoretical specific energy density of this chemical system is calculated as approximately 3505 Wh/kg. In other words, one kilogram of material produces very high energy on paper. In addition, this value is much higher than the figures of today's lithium-ion batteries. Moreover, it significantly outperforms promising solid-state batteries.

The 2000 km range promise is based on this high theoretical value. However, this figure is conveyed as a potential, not as a product feature. Therefore, the reader needs to adjust his expectations accordingly.

The statement came from Wu Kai, CATL's chief scientist. Wu Kai identified lithium-air batteries as one of the promising research directions at the Equipment Powerhouse Forum 2026. Still, the company did not share a timetable for the CATL lithium-air battery. Therefore, the issue remains a target for now.

How Does Technology Work?

Different materials are used in classical lithium-ion cells. In lithium-air, the negative electrode is metallic lithium. Oxygen is also taken from the outside air. For example, oxygen does not need to be carried within the battery.

During discharge, oxygen reacts with lithium and lithium peroxide is formed. During charging, this process is reversed. Therefore, the reason for the high theoretical energy density is that oxygen is taken from outside rather than being carried within the battery.

The real CATL lithium-air battery will be much more modest

On the other hand, the 3505 Wh/kg value does not take into account the weight of all components in a complete battery. Electrolyte, electrodes, protective parts and air supply system increase both weight and volume. Therefore, the actual performance of a ready-made battery will be significantly lower.

There are also serious obstacles on the engineering side. Stability of reactions, oxygen management and the ability to recharge the battery many times are among these. Therefore, the 2000 km range promise remains in a theoretical framework for now.

CATL is focusing on more mature technologies in the near term. These include sodium-ion and full solid state batteries. Lithium-air remains a long-term goal in the laboratory phase for now. Finally, no mass production plan or release date has been announced for the CATL lithium-air battery.