Dear Prof/Researcher/scientist's,

Generally, Energy and power densities are calculated from the device, (or/but), some reported paper's calculated from the three-electrode system.

Please kindly reply researcher's and professor's

2. Another question : How to mass balance (m- = m+) for Asymmetric supercapacitor?,

Cathode: transition Metal oxide (ex: NiO) and Anode A.C

How to charge balance (Q- = Q+), Please kindly give the reply (hand written/ or reference)