dear Ashraf,

you presented your query nicely, but I would like to mention here that "you could not get good specific capacitance via CV" although you can analyze it, if your material has such redox property.

Here, you did not referred about optimization of your methods,so I would suggest you that same thing which I had done during my optimization process

Based on reported work you can decide your parameter, kindly repeat your CV experiment with at least 5 cycles and try to vary the range of voltage of CV

I hope you may get satisfactory output which may infer you more about your material capacitive property.

This is not something answer but an advice to follow up experimental part.

thanks

Dear Saurav,

I have done that. I found from 0.4 to 1/1.2 is the best potential window.

But as of my materials, it should give good performance at that range.

So I am thinking to check with different electrolytes like:

1 M Na2SO4

0.5 M H2SO4

and 2 M KOH

What do you think, is it good to try those?

Dear Abdullah,

What is the composition of your sample?

This is the last CV result I got.

It was done in 1M Na2SO4 electrolyte.

Is there any one can explain what is the reason that, there is no oxidation and reduction peaks on the CV?

The material is Thiourea doped, Nickel, Tin and Ruthenium loaded carbon nanofiber (the XRD is also attached)

Thanks in advanced