Comments by "Joe Qi" (@i6power30) on "Why solid state rivalling lithium metal batteries haven't worked - until now" video.

  1. Battery design has many trade offs. Unfortunately most of the time people only focus on energy density. There is also longevity - both in terms charging cycles and calendar life. Also temperature sensitiviy, and charging / discharging rate. Often, they leave out one of them and only emphasize the one impressive metric.
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