Fabian Bimmer/Reuters
- Biden raised tariffs on China's green tech, but spared graphite for two years.
- China dominates global graphite supply, which is vital for EV batteries.
- Sila CEO said the delay harms investment in the US battery supply chain.
President Joe Biden this week hiked tariffs on China's massive green-tech sector, which includes electric vehicles, batteries, solar cells, and certain critical minerals, touting them as a way to protect American workers.