Chinese producers of nickel sulfate used in EV batteries stopped offering product due to the lack of price visibility.

Energy Secretary Jennifer Granholm and other officials speaking at this week's CERAWeek conference said the need to domestically produce more metals is rising.

Electric vehicles are in short supply in showrooms that have struggled to rebuild inventory of vehicles for more than a year.

A global push among automakers to expand their lineups of electric vehicles just got a lot more expensive.

The United States should not expect to rely solely on recycling of old batteries for supply, said Jon Evans.

Nickel prices doubled on Tuesday to more than $100,000 per tonne.