Sodium-ion: another route to storing energy
CATL and Changan presented a sodium-ion passenger-vehicle programme in February 2026. The interesting question is where the chemistry fits, rather than whether it replaces every lithium battery.
Canvas of Knowledge · 14 November 2026 · Illustrated explainerA DIFFERENT ION
Sodium-ion cells use sodium ions as charge carriers. Diversifying chemistry can diversify material choices, but each cell still needs an engineered cathode, anode, electrolyte and manufacturing process.
CHINESE EXAMPLE
CATL’s February 2026 announcement described Naxtra batteries for a Changan programme and a planned market introduction. Its published cold-weather and energy-density figures are manufacturer claims for that product.
AVAILABILITY CHECK
A launch announcement is not proof of customer deliveries in every market. Verify the exact model, battery variant, homologation and local on-sale status before using it in a buying comparison.
THE IDEA TO KEEPSodium-ion adds an option to the design toolkit; the best chemistry depends on the application.
Sources & further reading
Sources reviewed 14 November 2026. Specifications and availability depend on the product, market and date. Source organisations do not endorse this website.