Key Takeaways GM reached a deal with EV battery materials company Vianode to supply the automaker with synthetic anode graphite.Anode graphite is the largest material by weight in lithium-ion batteries,

The deal, with Norway’s Vianode, is for delivery of a material critical for electric-vehicle batteries, the companies said Wednesday.

Once Norway's Vianode launches production in North America, the deal will run through 2033. The new plant could be in the U.S. or Canada.

General Motors has signed a multi-year, multi-billion dollar agreement for Norway's Vianode to provide the U.S. automaker with synthetic graphite anode materials for its electric vehicle batteries, the companies said on Wednesday.

The "multibillion"-dollar deal, according to a news release, covers supply of synthetic anode graphite toward 2033.