Skip to main content

02-09-2021 | Battery | News | Article

CATL Introduces First Generation Sodium-ion Battery

Author: Patrick Schäfer

1 min reading time

Activate our intelligent search to find suitable subject content or patents.

loading …

Battery manufacturer CATL has introduced a sodium-ion battery. It is said to offer high energy density as well as fast charging capability and to have very good thermal stability. 

The sodium-ion battery from Contemporary Amperex Technology Co. limited (CATL) has a similar operating principle to the lithium-ion battery. However, compared to lithium ions, sodium ions have a larger volume and higher requirements for structural stability and kinetic properties of materials. To increase the capacity, CATL used Prussian-white material with higher specific capacity at the cathode and redesigned the structure by rearranging the electrons. For the anode material, CATL developed a porous hard carbon material to guarantee storage and cycling stability.

The energy density of the sodium-ion battery cell unveiled at CATL’s “Tech Zone” event reaches up to 160 Wh/kg, according to the manufacturer. The battery can be charged to 80 % SOC in 15 min at room temperature. At an ambient temperature of -20 °C, the capacity retention rate is said to be more than 90 %. The development target for the next generation of sodium-ion batteries is an energy density of over 200 Wh/kg. 

CATL has also developed an AB battery system solution using sodium-ion batteries and lithium-ion batteries. Here, the different battery systems in the integrated solution are controlled by a battery management system. With the sodium-ion battery, the manufacturer bypasses the use of lithium, the mining of which causes water pollution and the release of toxic chemicals through leaching and air emissions, causing environmental problems.


Related topics

Background information for this content

Premium Partner