# Pseudocapacitive behavior in EC electrode materials [closed]

As we know in electrochemical capacitors or supercapacitors, the basic electrochemical signature is CV (cyclic voltammogram) curve. Some materials like $\ce{RuO2}$ and $\ce{MnO2}$ have a capacitive-like CV curves similar to that of EDLC (electro double layer capacitors), so we call such a material pseudocapacitive materials.

On the other hand, materials like cobalt oxides and $\ce{Ni(OH)2}$, which is battery-type electrodes that exhibit faradaic behavior (even those that are electrochemically irreversible), have been presented in the literature as pseudocapacitive materials, which leads to a confusion for the readers.

So, when could we say that a material has a pesudocapacitive behavior?

## closed as primarily opinion-based by hBy2Py, Jan, Pritt Balagopal, Jon Custer, MithoronAug 21 '17 at 13:35

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

• Jargon collisions like this are unfortunately all too common. I don't think you're likely to get a satisfactory resolution. – hBy2Py Aug 21 '17 at 3:12