The reference electrode establishes a reference potential for accurate voltage measurement, while the counter electrode works together with the active electrode to facilitate the charge and discharge processes that store and release electrical energy in a supercapacitor. Both these electrodes are crucial components in enabling the supercapacitor to efficiently store and deliver electrical energy. Arun Tamilselvan

Hi,

The reference electrode in a supercapacitor helps establish a stable potential for the device, while the counter electrode facilitates charge/discharge processes by providing a surface for ion adsorption and desorption.

Sunita Saharan The potential is the reference electrode's role. While the reference electrode does establish a stable potential, it is not primarily for voltage measurement in a supercapacitor. Its main role is to provide a stable reference point for the electrochemical processes occurring in the supercapacitor. Voltage measurement is typically done using external instrumentation, not the reference electrode itself.

Reference electrode [RE], as by its name provide a stable reference potential, so we can measure the potential difference between RE and Working electrode [WE]. Commonly used ones are Ag/AgCl, Hg/HgCl.

Counter electrode [CE] is used to collect the electrons or charge, so we can measure current between CE and WE.

That's why we use a highly conducting material like Platinum wire.