An appreciated update from QuantumScape on encouraging cycle life tests, although there is not much new info since the showcase. But I am reminded a little bit about Jeff Dahn’s “million mile battery” from ~15 months back…
A lot of people seemed to read that paper as an indication of what Tesla would soon be able to do (maybe?) - I read it more as an encouraging sign of what the Li-ion chemistry was capable of in terms of cycle life, and that’s how I look at this too.
What also made me think of the Dahn paper was the mention of 99.991% charge efficiency - Dahn’s paper reported CE as high as 99.985% for optimised electrolytes. Though I’m cautious about this comparison since CE ≠ capacity loss per cycle.
Some things I’d hope to see in future data releases: