Keith wrote:
>
> Supercaps would be Superdupercaps if not for this effect.
> Huge gradients are the norm at such thin interfacial layers.
>
> Huge gradients are the norm at such thin interfacial layers.
>
Speaking of capacitors, the anodized aluminum oxide capacitors with an
electrolyte wick (paper or fiberglass?) between the oxide layers can be made (rapidly) by dipping
aluminum foil or sheet ( hooked to positive side of a 250 volt DC power supply) into a weak
acid in a stainless steel "bucket" hooked to the negative side of the PS.
Would you believe "Molybdic Acid" in distilled water ?
CAUTION: ELECTRICAL SHOCK HAZARD!!
The hard, grayish-brown insulating anodized coating forms as fast as you can immerse the aluminum.
I never tried it with anything thinner than 1.5 mm because it really chews up the aluminum. :-)
Frederick
