The fact that they can withstand temperatures of -40 degrees Fahrenheit means EVs using these batteries won’t lose range in extreme conditions. This addresses a key barrier to EV adoption, as many worry EVs are less reliable in such conditions. Lithium-ion batteries struggle under the effects of extreme temperatures – whether cold or hot.
In conclusion, CATL ‘s introduction of a Sodium-ion Battery ready to endure harsh temperatures represents a crucial development in energy technology. This advancement not only bolsters battery safety and resilience but also sets the stage for future innovations.
In 2021, CATL showcased the first generation of sodium-ion batteries, capturing media attention with high energy density and quick charging capabilities. CATL ‘s second-generation battery promises further improvements and broader application prospects.
In January 2024, BYD (Xuzhou) started construction of a sodium-ion battery project with an annual production capacity of 30 GWh. Initially, this is meant to produce batteries with an energy density of 105 Wh/kg, increasing to a density of 130 Wh/kg. This makes claims of a second-generation CATL battery with 200 Wh/kg seem unlikely.
Furthermore, the batteries have exhibited better safety performance and low-temperature resistance while maintaining energy density. Currently, the official energy density of the new sodium-ion battery has not been reported; however, it is known that CATL aims to exceed 200 Wh/kg.
On November 18, CATL announced its second-generation sodium battery. Speaking at the World Young Scientists Summit, chief scientist Wu Kai revealed the development of the battery and said that it would be launched in 2025.