Battery Day in April According to CS, Tesla will instead announce “cobalt-free” batteries at its Battery Day in April, saying it is “probably a new type of lithium ion produced by Maxwell using a new high nickel positive electrode + pre-lithiated negative electrode + dry battery technology + supercapacitor battery and two products of super lithium iron phosphate battery using CTP technology” (translated from Chinese).
Maxwell’s dry electrode technology can increase the cell’s energy density to more than 300Wh/kg, and it is expected to further increase to 500Wh/kg in the future, or break the current bottleneck of 300Wh/kg of ternary lithium batteries.
However, it remains to be seen whether Maxwell’s cobalt-free batteries can be commercialized at this stage – bring on Battery Day.