The Big Money Musk Sees in Lithium Is Getting Harder to Make

Elon Musk says there’s big money to be made by turning raw lithium into battery chemicals, but shrinking profit margins suggest the mining end of the business might still be a better bet.

Musk last month described lithium refining as the hard part in the complex process of getting raw materials out of the ground and into Tesla Inc.’s cars. For those who can crack it, it’s a “license to print money,” he said.

And he was right: margins did spike earlier this year, as booming orders from carmakers drove a record surge in prices for the specialty chemicals produced by “merchant refiners” -- companies that purchase and process material from lithium producers.

But the refiners’ profits can quickly wither if the cost of raw materials rises faster than the price of the lithium chemicals they sell. While China’s Covid lockdowns have weighed on demand for finished products from battery- and automakers in recent months, the price of mined raw materials has continued to surge.