Lithium Ion Batteries - The Only Prom Left Is Safety

There's plenty of lithium on earth, but as we've discussed, it needs extracting. Lithium ion batteries also rely on other key metals, cobalt and nickol. And those metals are an even shorter supply, and they're problematic for other reasons too. Researchers have figured out how to make batteries with weigless cobalt. They're trying to do away with both cobalt and nicholl altogether. The ultimate aim is to figure out batteries that don't require lithium at all,. like sodium or magnesium and calcium thay can literally dig out of the ground pretty much everywhere.