Or it can be extracted from sea water, or it can be extracted from used batteries that are being recycled. As the tech scales up worldwide, recycling will be a

Or it can be extracted from sea water, or it can be extracted from used batteries that are being recycled. As the tech scales up worldwide, recycling will be a major factor in creating a closed loop (i.e. sustainable) system with the resources that are extracted. One company working on the recycling end of this is Redwood Materials: https://en.wikipedia.org/wiki/Redwood_Materials,_Inc https://en.wikipedia.org/wiki/Redwood_Materials,_Inc.