Hii,
I want to calculate the specific capacity (C/g) from CV and GCD curves for a symmetrical battery type supercapacitor device. So, can any one please help me in this regard.
Thanks in advance.
Dear Meenaketan Sethi
Are the CV is rectangularly and GCD triangularly shaped? If so C from cv is C= integrated area of CV/(2x scan rate x voltage window).
From GCD = I x discharge time/ voltage window.
If not, it is questionable is it supercapacitive or simple energy storage materials so instead of C, capacity q mAh/g should be given.
Please look the paper:
To Be or Not To Be Pseudocapacitive?
http://jes.ecsdl.org/content/162/5/A5185.full
Thank you Branimir N. Grgur Sir, for your kind reply. The CV and GCD curve is nearly rectangular in shape and the material is graphene-spinel composite. So, here is my doubt is it better to report the value in capacitance (F/g) or capacity (mAh/g, C/g) for the symmetrical supercapacitor device. If, I have to report in specific capacity, then how to calculate the value from CV and GCD curves. Please help me in this regard.
Thanks in advance.
Dear Meenaketan
From cv q = integrated area of CV/(2x scan rate)
From GCD simply Ixdischarge time,
Take care about units to obtain Ah or mAh
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