10/10/2026
Sodium-Ion Batteries: The "New Route" for Automotive Power Batteries. Four Major Advantages of Sodium-Ion Batteries.
❶ Virtually Inexhaustible Resources Sodium's abundance in the Earth's crust is hundreds of times greater than that of lithium. Sodium content in seawater is extremely high, and it can be extracted cheaply from seawater, salt lakes, and rock salt — the main component of table salt is, after all, sodium chloride. This fundamentally eliminates dependence on scarce resources such as lithium, cobalt, and nickel.
❷ Cold-Weather Performance That Crushes Lithium Batteries Low temperatures are a chronic weakness of lithium batteries (winter range gets cut in half, and they can't be charged), whereas sodium ions experience much less activity loss in the cold. CATL's Naxtra sodium-ion battery system still retains about 90% of its capacity at -40°C, and can charge normally at -30°C.
❸ Significant Cost Potential Sodium itself is cheap, and sodium-ion batteries can use aluminum foil directly as the anode current collector (lithium battery anodes must use copper foil), with aluminum being far cheaper than copper. CATL expects sodium battery costs to reach parity with lithium iron phosphate (LFP) by the end of 2026, with an even clearer cost advantage after 2027.
❹ Better Safety
Sodium-ion batteries can be discharged to 0 volts for storage and transportation, offer better thermal stability, and carry a lower fire risk a definite plus for easing "battery safety anxiety."
