'Nickel is our biggest concern’: Elon Musk on Tesla now producing cars with iron batteries
A file photo of Tesla CEO Elon Musk.
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Tesla is planning to shift some of its cars to a type of battery that uses iron instead of nickel, the company's chief executive officer Elon Musk said on Thursday.
"Nickel is our biggest concern for scaling lithium-ion cell production. That’s why we are shifting standard range cars to an iron cathode. Plenty of iron (and lithium)!" Musk wrote on Twitter.