“Sodium-Ion Explained: The Battery That Lost To Lithium Forty Years Ago Is Back”, Swarajya, 28 Sep 2026.

“Sodium-ion and lithium-ion batteries are about the same age. Both came out of the same burst of research in the early 1980s, in the same kinds of labs, and for a while it wasn’t obvious which would win.

Eventually, Lithium won outright. Sony put the first lithium-ion battery on sale in 1991, in a camcorder, and every phone, laptop and electric car since has run on lithium-ion. Sodium went into a drawer for 30 years.

But now it’s back. In the past three years it has gone from a lab curiosity to something the world’s biggest battery maker puts in cars and sells by the tens of gigawatt-hours.

Indian companies are announcing pilot plants. Ministers are giving timelines.

The obvious question here is: if this battery lost to lithium 40 years ago, what changed?……..”

Read the full article at Swarajya.