EV batteries are charged and discharged by the flow of lithium ions between the graphite-containing anode and the cathode.Cathodes contain nickel which delivers high energy density, allowing the vehicle to travel further.Cobalt ensures cathodes do not easily overheat or catch fire and it helps extend the life of batteries which automakers usually guarantee for eight to 10 years. QUOTE
Use of cobalt is essential for quality batteries IMO
https://www.reuters.com/business/autos-transportation/costs-nickel-cobalt-used-electric-vehicle-batteries-2022-02-03/
Cobalt outlook bullish through 2022., page-2
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