Many battery tech are dead simple. It is a rolled layer of specific materials at precise thickness but really not rocket science, especially when you are not concerned about per kg efficiency. Flywheels are much more complicated, requiring well maintained mechanics, a motor and a dynamo.
I want to see more stuff like grid scale flywheel energy storage. Dead simple tech and if it can live power by even 6 hourait's immediately useful, 24 and that's 90% of that you need
keepthepace@slrpnk.net 1 year ago
schroedingershat@lemmy.world 1 year ago
It takes a 260kg flywheel with all its mass at the edge spinning at mach 0.5 to store 1kWh.
If you want simple, build a carnot battery. It’ll be half as efficient, but far more compact and long lasting.