While I agree that the blurb you quote strongly implies that the sodium-ion batteries contain lithium, I don't think the article itself really says that. > CAT

While I agree that the blurb you quote strongly implies that the sodium-ion batteries contain lithium, I don't think the article itself really says that. > CATL and BYD's sodium-ion batteries will both be carried in mass-produced vehicles within the year, and they [the vehicle battery packs] will both be a mix of sodium-ion and lithium-ion batteries, according to a report by local media 36kr today. By my reading of that, and the rest of the article, it's saying that the vehicle battery will be assembled from of a mix of sodium-ion and lithium-ion battery cells, not that the sodium-ion cells contain lithium. > With its pioneering AB battery system integration technology, CATL has achieved a mix of sodium ion and lithium ion, allowing them to complement each other and thus increase the energy density of the battery system, Huang said at the time. Basically, a "battery system" using only sodium-ion cells does not yet have enough energy density to support their range targets, so they are using a mix of cell types to improve the energy density and increase the vehicle range.