I'm very confused (as apparently are a lot of journos). I found...

I'm very confused (as apparently are a lot of journos). I found this in Torque, which is following the battery story:

Truthfully, removing cobalt could dramatically reduce the battery life cycle. As cobalt protects the cathode from corrosion, reducing its content in batteries could slash the life cycle of the battery cell. Thus, battery researchers at Panasonic, for example, found a way around it.The batteries usually offer an eight-year warranty, which means they can keep 80 percent of their capacity after that period. According to Truecar, „under normal driving conditions, EV batteries can last 10 years before they need to be replaced. That's much longer than most people keep a new car.“Panasonic managed to remove cobalt from the equation altogether. Their new range of 4680 batteries intended for the new generation of Tesla cars do not use nickel-manganese-cobalt cathode but a high-nickel cathode. Also, these batteries, scheduled to find their way into new Teslas in 2022, use silicon anode instead of a graphite one.These batteries, which are differently packed compared with the current Tesla batteries, could prove to be a game-changer.