I am facing a reproducibility issue. I am measuring the specific capacitance for my sample (carbide based). I am getting pseudocapacitive behavior in CV curves. The first time while measuring GCD i am getting around 100 F/g at 1 A/g current density, but when i try to repeat the same i am not getting the same value. Moreover the GCD curve is not triangular shape.
Electrolyte used is 1M Sulphuric acid
Mass loading is from 1.3 to 1.8 mg/cm2
Potential window is from -0.1 V to 0.4 V
B. Srikanth Ragunath, The non-triangular shape of the Galvanostatic Charge and Discharge (GCD) curve, along with varying specific capacitance values during repeated measurements, can be attributed to factors such as pseudocapacitance, electric double layer behavior, electrode properties, and experimental conditions.
- Chen, G. Z. (2013). Understanding supercapacitors based on nano-hybrid materials with interfacial conjugation. Progress in Natural Science: Materials International, 23(3), 245-255.
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