Tech Ping!..................
Nothing to sneeze at.
They would be able to safely take a charge much faster than any Lithium-based battery, and would be a very good match for maximizing energy recovery during regenerative braking.
Current regenerative braking is limited by the battery and onboard charging circuits' limits on charge rates. Excess energy is bled off as heat through the brakes.
You would need to combine the supercapacitors with traditional Lithium batteries for a practical vehicle, though.
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Isn’t EVERY capacitor a dielectric capacitor?
So close to the Flux capacitor now....
Will it flambe itself while sitting in your garage and burn your house down?
I thought Robin Williams invented nano things.
Don’t cross the streams.
The great advantage to this technology is that you no longer would have to worry about battery fires. A capacitor bank of similar energy storage ability might be able to vaporize (or at least incinerate) the entire car within a second if it failed badly.
The National Ignition Facility (https://en.wikipedia.org/wiki/National_Ignition_Facility) uses “a capacitor bank that stores 400 MJ (110 kWh)”, which equals 147 horsepower for one hour. (I’m not sure how many miles this would be in practice.)
Note: The NIF uses capacitors because they can discharge their energy real fast in order to generate a 500 trillion watt laser pulse. Flywheels or batteries can’t do this.
Lots of (slightly scary) capacitor safety info can be found by searching online.
Eventually, they’ll find something that will work in the real world.
The using capacitors as a ‘battery’ has unique challenges though. What happens if the cap dumps it’s load all at once?
This still annoys me:
“Ultrahigh Energy Storage in 2D High-κ Perovskites.”
2D? So it has NO thickness? (If it’s even 1 atom thick, then it has SOME thickness, and as such is 3D, right?)
I looked at the paper
https://pubs.acs.org/doi/10.1021/acs.nanolett.3c00079
The energy density approaches that of a battery. A catastrophic failure would likely produce an impressive bang.
It might make a good power source for military lasers. Keep it charged up from vehicle power, and able to power short shots.
The improved storage of electric energy still requires one to first produce and distribute that electric energy. No real world solutions to those problems in sight that would justify a conversion to all-electric...well, everything.