Sol-gel capacitor dielectric offers record-high energy storage

phys.org ^ | July 30, 2015 | by John Toon

[ShadowAce]

[AFreeBird]

But does it have to? Can’t it be a regulated release?

[Bloody Sam Roberts]

The new material is composed of a silica sol-gel thin film containing polar groups linked to the silicon atoms and a nanoscale self-assembled monolayer of an octylphosphonic acid, which provides insulating properties.

Now...why didn't I think of that?

[Red Badger]

I mean, really, it’s so obvious, now.........................

[Red Badger]

It can be. The discharge rate is inversely proportional to the load resistance...................

[reviled downesdad]

Discharge rate is hi - but as one post here noted the voltage drops. The other issue is the time constant for either discharge or charge. Usually the time contact is very small because the total capacitance is low. Ultra capacitors or this tech will have bigger time constants which is function of the total capacitance. Anything that rivals the energy density of a battery will take significant time to charge.

Also, at some point you will be pushing the limits of a common 15A outlet.

[TexasRepublic]

“The new material is composed of a silica sol-gel thin film containing polar groups linked to the silicon atoms and a nanoscale self-assembled monolayer of an octylphosphonic acid, which provides insulating properties.”

That’s what my mom used to say, but us kids never listened.

[Red Badger]

IIRC, every house is wired for 230V, being split into two sections of 115V, usually delivered thru, as you say a common 15A outlet. But a 230V high amperage outlet can be installed by a competent electrician without much hassle......................

[AFreeBird]

Thanks! That helps...... I think.

[from occupied ga]

Can’t it be a regulated release?

Yes - of course. The biggest problem with using capacitors as energy storage devices is that the voltage drops rapidly as the capacitor discharges.

Of course if you're blasting the whole thing to pump a laser or simultaneously fire a bunch of exploding bridgewire detonators for example that doesn't matter.

[Ozark Tom]

A four-switch buck-boost DC-DC convertor can take a range of input voltage and produce a regulated range of output voltage. No matter the change on the input, within the acceptable range, the desired output will be maintained.

[Sawdring]

[Red Badger]