Tesla has applied for a new patent that is revealing the lithium extraction process that Elon Musk vaguely described as “using table salt to basically extract lithium from ore” during Tesla’s Battery Day last year.

It could cut costs by more than 30%, according to the automaker.

https://electrek.co/2021/07/09/tesla-patent-reveals-elon-musk-table-salt-lithium-extraction-process/?