# energy density

CATL Stakes Market Defence on Sodium-Ion Batteries to Solve Cold-Weather Woes and Stem Share Loss

CATL has launched a mass‑produced sodium‑ion battery targeted at commercial vehicles operating in extreme cold, positioning the technology as a remedy to winter degradation and a defence against market share erosion. While sodium offers safety and resource benefits, its lower energy density and nascent supply chain mean commercial success hinges on rapid scaling and cost reduction over the next two to three years.