Hello Yeonghun Yun

As per your other RG question, please see the following literature for guidance on measuring supercapacitor performance:

Dear Dr. Yeonghun Yun,

I suggest you to have a look at the following interesting paper and note:

-Best practice methods for determining an electrode material’s performance for ultracapatitors

Meryl D. Stoller and Rodney S. Ruoff

Energy & Environmental Science (2010)

Available directly at Research Gate:

http://www.researchgate.net/file.PostFileLoader.html?id=559b8f226225ff3e218b456a&assetKey=AS%3A272527534419982%401441987035909

-Supercapacitors

Available at: https://www.illinoiscapacitor.com/pdf/Papers/supercapacitors.pdf

Best regards, Pierluigi Traverso

Dear Yeonghun Yun,

You can measure the electrode's (for example; only carbon/ metal oxides) capacitance by following a 3-electrode setup. For this you have to coat your material on stainless steel/Ni-foam of particular dimension that will serve as working electrode, Pt wire you can take it will serve as counter electrode, saturated calomel electrode will serve as the reference electrode, and electrolyte of your choice.

Another way of measuring the capacitance is by following the supercapacitor device fabrication (symmetric/asymmetric) with electrolyte according to the choice of your potential window. Then, obtain the Cyclic voltammetry (CV) and Galvanostatic charge-discharge (GCD) plots to measure the capacitance values.

Follow the journal for your reference.

Article Eco-friendly synthesis of porous graphene and its utilizatio...

Hello Yeonghun Yun

As per your other RG question, please see the following literature for guidance on measuring supercapacitor performance: