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Author Topic: Self-charging supercapacitor power cell (SCSPC)  (Read 602 times)

Offline Bertoa

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Self-charging supercapacitor power cell (SCSPC)
« on: June 14, 2022, 12:38:42 PM »
Take a supercap, make a shortcut to clear and measure a day later the voltage. Depending on the type of supercap, you measure a voltage between 100 mV and 300 mV. With 2 supercaps in series, this can rise to more than 1 volt after a few days. A self-charging supercapacitor power cell (SCSPC) attains tremendous research interest due to their ability to harvest-, convert-, and store- energy in a solitary integrated energy device. The use of liquid electrolytes in SCSPC limits the mechanical to electrical energy conversion efficiency, therefore, the development of alternative electrolyte system has priority.
Research developed a piezo-electrolyte film comprising of solid proton conducting electrolyte (phosphotungstic acid (PTA)) embedded in the piezoelectric PVDF matrix and use these free-standing films as separator instead of electrolyte for use in SCSPC devices.
So, free energy is at hand in one device, the supercap. I made a test setup with 2 double layer supercaps of 22F in series and can confirm that this works. After 2 days I measured 1 volt, enough to power every now and then at nano/micro scale a loT device.

Offline Paul-R

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Re: Self-charging supercapacitor power cell (SCSPC)
« Reply #1 on: June 14, 2022, 01:42:29 PM »
Why not an ordinary cap?
Is this any different to static charges building up here and there?

Offline skywatcher

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Re: Self-charging supercapacitor power cell (SCSPC)
« Reply #2 on: June 14, 2022, 10:06:08 PM »
It works, but only a few times. Every time the end voltage gets lower. And it's not 'free' energy. Batteries show the same effect. After you 'discharge' it, voltage will come up again.