Tesla to make EV battery cathodes without cobalt

Illustration by Alex Castro / The Verge Tesla will make electric vehicle batteries with cobalt-free cathodes, it announced during its Battery Day event today. The announcement came as part of the company’s move to make batteries in-house instead of purchasing them. Musk didn’t give a timeline for going to a zero-cobalt battery.
Cobalt is the most expensive material used in batteries, so eliminating it from the mix was expected help to electric vehicles become as affordable as those