Comment on China connects its largest battery-supercapacitor hybrid storage plant - Energy Storage
porksnort@slrpnk.net 1 week agoBatteries and capacitors both store electrical potential, but in different ways. So yes you can compare their performance at storing and then delivering electricity under specified conditions.
Batteries can keep charge longer with less loss, but capacitors are faster at responding to rapid changes in eletrical supply and demand.
The quote you included shows exactly how they compared the performance at low temperatures, as an example. Maybe I am missing your objection?
RvTV95XBeo@sh.itjust.works 1 week ago
A capacitor has ~1% of the storage capacity of a battery of similar power rating.
Saying its storage performance is better because its holds a larger % of that capacity at low temperatures is nonsense because its storage performance objectively sucks (and not what it’s designed to be good at)
It’s like saying a Tesla is better than a 747 because it can go from 0-60 faster. A technically true statement but a meaningless performance comparison.