Sodium-Ion Revolution: CATL’s Winter Bet on Electric Cars

Following the initial implementation of sodium-ion batteries in commercial transport, CATL has now begun using them in passenger vehicles. The batteries are produced under the brand Naxtra, which is preparing for winter trials in passenger cars. Models from Changan’s Oshan series will be among the first to participate in these tests, with passenger vehicles from GAC and JAC expected to join later. The focus on winter testing is not accidental. One of the main advantages of sodium-ion batteries is reliable performance in severe cold conditions, unlike lithium-ion batteries, which usually struggle in such environments.

CATL officially introduced its sodium-ion battery last April, and on paper, the figures are quite impressive. CATL reports an energy density of 175 Wh/kg, a hybrid range of over 200 km (124 miles), and a pure electric range exceeding 500 km (310 miles). The battery also supports ultra-fast charging at 5C and is designed for 10,000 charging cycles, indicating long life expectancy.

Safety is the main selling point of CATL. The company claims its sodium-ion batteries have passed extreme tests such as needle puncture, drill penetration, extrusion, and even sawing, without catching fire or exploding. This is one of the main reasons why sodium-ion batteries are a promising option for electric vehicles.

Sodium-ion batteries also show exceptional performance in cold weather. In real tests at –30°C, according to CATL, the battery can charge from 30 to 80% in about 30 minutes, maintaining 93% of its usable capacity. Even at only 10% charge level, cars are reported to maintain highway speeds of 120 km/h (75 mph).

Recent developments indicate that CATL is investing in expanding the production capacity to meet the growing demand for these batteries. Their unique selling point is both the cold-weather resilience and the sustainable resource base, as sodium is more abundant and cheaper than lithium. These factors position CATL strongly in the evolving landscape of electric vehicle technology.