Aranganathan Viswanathan

10 Questions 20 Answers 0 Followers

Questions related from Aranganathan Viswanathan

Is it possible to use the data of symmetric supercapacitor cells of two different materials to make the asymmetric supercapacitor cells?

The convention is to use the data of three -electrode system for mass balancing to make the asymmetric supercapacitor cells, how about using the data of symmetric cells to balance the mass and...

last month 1,437 2 View

Is the capacitive contribution to the total capacitance obtained from CV need lie inside the area of CV plot?

Dear friends, it is well known that the total capacitance = surface capacitance + intercalation capacitance (i(V)/v^1/2 = k1 v^1/2+K2) for the composite electrode materials, and the concept...

25 June 2020 6,965 2 View

How to calculate the rate of electron transfer reaction using CV curves?

Dear Friends, the calculation of rate constant of electron transfer reaction can be done using CV and EIS methods, in the case of CV techniques, using the (Ep-E'o) vs ln ip plots and which is...

25 June 2020 8,118 0 View

What is the intercept value of plot between log peak current vs log scan rate provides?

Dear Friends, it is known method to calculated the b-value (i=av^b) from the plot of log peak current vs log scan rate using the slope value (linear fitment) but what about the intercept value...

25 June 2020 9,316 0 View

Is it possible to calculate the number of electrons transferred in a redox reaction using the potentials of redox couples?

Dear Friends, I have got a redox couple with a reduction potential at 0.5786 V and an oxidation potential at 0.4622 V , using these values, How would I arrive at the number of electrons...

09 June 2020 3,291 7 View

Is it possible to calculate power density from CV curves of a supercapacitors?

Dear friends. it is well known calculating power density (p) charge/discharge curves using formulae of P=E/td and P= V^2/ESR, and both of the formulae use GCD curves for the calculation. Now is it...

23 May 2020 4,205 3 View

Why 1M H2SO4 can not be used as electrolyte for supercapacitors involving Ni(OH)2? Why potential window more than 0.7 V can not be used for Ni(OH)2 ?

it is generally said that the full potential window of aqueous electrolytes (1.2 V) can not be used for supercapacitors containing electrodes made up of Ni(OH)2 , but what is the harm in it, if...

22 April 2020 1,280 0 View

How the potential window of aqueous electrolytes can be extended beyond 1.23V in asymmetric supercapacitor cells without electrolysis of electrolyte?

Potential window offered by aqueous electrolytes is 1.23 V, which is due to the fact that beyond 1.23 V the aqueous electrolytes will undergo electrolysis (common in symmetric supercapacitors)....

27 April 2019 6,814 14 View

How the specific capacitance calculated from GCD and a plot of frequency vs capacitance differs ?

dear friends, Cs=I × dt/m× dv is the formula used to calculated specific capacitance from GCD curve where as c=-1/2πfz'' is the formula used to calculate capacitance from the plot of...

12 March 2018 332 4 View

Can you please share with me the method to plot dQ/dV plots of CV curves?

Dear researchers, how to draw the dQ/dV vs potential plot using the CV data, and please shar with me the significance of this plot, i tried doing it using the differentiate function form the...

01 January 1970 7,783 0 View