For Tesla and its chief competitors in the race for global domination of electric vehicle sales, it ain’t all about lithium ion. There are other valuable metals needed to make the battery packs do what’s asked of them, with nickel being essential. Tesla and its battery producer partners, and other automakers and their suppliers, are worried about the longer-term supply of nickel according to a new study by BloombergNEF. The study predicts that EV makers will be driving demand for nickel about 16 times to 1.8 million tons in the…