09/07/2026
Sodium-ion batteries are being talked about as the technology that will take over from lithium-ion. That's not quite right, so let's look at the facts.
Lithium-ion batteries pack more energy into less weight than sodium-ion ever will. This is why lithium stays in electric cars built for long range, in performance vehicles, and in aircraft, where every kilogram counts. No engineering breakthrough changes that basic chemistry.
Sodium-ion earns its place elsewhere. It is cheaper to produce and safer, since it does not carry lithium's risk of overheating and catching fire under stress. This makes it the sensible choice for large, stationary battery storage next to wind and solar farms, where weight is irrelevant and safety is critical.
Changan, a large Chinese manufacturer, has fitted a sodium-ion battery into a production car, the Nevo A06, now in dealerships in China. Its sodium-ion version covers around 400km, compared with 510km to 630km for the lithium-ion versions of the same car. Electric farm machinery is likely next, since weight limits do not apply there either.
There is a second point worth understanding. Sodium is one of the most abundant elements on Earth, found in oceans and salt deposits everywhere. Because of this, people assume the supply chain around sodium batteries will automatically be spread out and free from any one country's control.
Abundant raw sodium is not the problem. The true value sits in the chemical processing and manufacturing needed to build battery cells at scale, and that capability takes serious capital, technical know-how, and accumulated experience to build, not simply time. Whoever controls that processing and manufacturing holds a real advantage, but that advantage only holds if it can be plugged into a secure, sustainable route to market, regardless of where the raw sodium came from.
The real question in sodium-ion is which countries and companies end up controlling both the manufacturing and a secure route to market for it.
