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Can you make a supercapacitor from kapton tape? Yep! Using a laser, we can decompose the Kapton (polyimide) into a graphene "foam" via a process known as Laser Induced Graphene. This form of graphene makes an excellent material for electrostatic double-layer supercapacitors. It has reasonable conductivity and a very large surface area due to the foamy nature, which allows good contact with the electrolyte.

"Lin, Jian, et al. "Laser-induced porous graphene films from commercial polymers." Nature communications 5.1 (2014): 1-8." https://www.nature.com/articles/ncomm...

More papers on LIG: https://scholar.google.com/scholar?as...

0:00 Intro
0:48 Graphene
1:51 Laser Induced Graphene
3:07 Supercap structure
4:12 Expected voltage
4:36 Parallel plate capacitance vs Electrostatic double-layer
6:05 Stacking kapton to increase capacitance
7:04 Adding electrolyte and watching capacitance increase
7:37 Validating the capacitance meter
9:10 Low voltage, high-temperature heater setup