I wanted to make a symmetrical capacitor consisting of 2 Carbon/PPy films by mixing PVA and H2SO as a separator. However, I was unable to turn on the lamp. I took the attached work as an example. Where do you think I went wrong?
Hi Dilek,
The LED lamps not turning on could be due to several reasons. First, how the supercapacitor was charged? Thin films as prototype supercapacitors may burn easily when charged, you need to use the same current and/or voltage range you used for the echem measurements. Example, if you are charging manually using a 1.5V battery, make sure your protoype device can work on a 1.5V window. Things go much easier when charged using a power supply.
If you were already working on the correct current/voltage range, the stored charge might still not be enough to light up the LED. This is a usual case due to issues such as connection problems that are often not discussed on papers. The solid electrolyte drying up may also cause a lower charge storage than what was expected.
Both of these problems can be solved by using multiple supercapacitors (either in series or in parallel) for this can significantly widen both voltage and current operation windows .
You can refer to this paper as a guide (although it uses fibers, but the configuration may help)Article Highly Conductive Ti3C2Tx MXene Hybrid Fibers for Flexible a...
Hope this helps!
Good luck!
Cheers,
Ken
Ken Aldren Sumaya Usman Thanks for your clear answer and comments :)
Get some hints:
Supercapacitor - LED run test https://www.youtube.com/watch?v=f3bDIclEkS4
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