Garima Chaturvedi

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Questions related from Garima Chaturvedi

How to calculate transference number for gel polymer electrolytes?

Also, the transference number and transport number are same or different? If they are different then how to calculate them for cations and anions?

01 June 2023 3,710 1 View

How to conduct self discharge test for supercapacitor with/without Potentiostat?

A gel polymer based supercapacitor device is fabricated and need a testing for self discharge. I am using CHI instrument for the electrochemical characterization. Also, the leakage current and...

01 June 2023 8,870 1 View

How to perform electrochemical characterizations of flexible supercapacitor using split cell?

I have fabricated ionogel (polymer + ionic liquid) and I am trying to acquire the CV, GCD and EIS of the fabricated device using flexible substrate. I am using two electrode split cell for the...

16 September 2022 6,085 0 View

Why the b value in supercapacitor is less than 0.5?

The power law i=av^b is used to calculate the b value. Generally the range for b value is 0.5 to 1 corresponding to slow diffusion to highly capacitive nature of the material. What will happen...

17 March 2022 8,840 1 View

How to calculate diffusion layer thickness for an electrochemical system?

Need to calculate diffusion layer thickness in three electrode cell for electrochemical capacitor.

23 February 2022 8,337 2 View

Why EIS done at OCP (Open Circuit Potential) and not at other potentials (potential at which reaction is happening)?

The EIS in supercapacitor is generally conducted at OCP (open circuit potential). However, in pseudocapacitive material if the region of interest (potential at which anodic or cathodic reaction...

02 December 2021 4,823 4 View

How to perform BET analysis of MOF?

I have synthesized Nickle MOF using the microwave irradiation technique. However, I am unable to get the surface area of the material. What could be the possible reasons? I have tried both...

24 August 2021 4,789 4 View

How to deconvolute the electrochemical impedance spectra?

I want to understand the mechanism of an electrochemical system. Hence, deconvolution of EIS spectra with distribution of relaxation time will help in the identification of several phenomenon...

28 September 2020 4,510 1 View

Is log i vs log v (scan rate) an appropriate parameter for defining the capacitive and battery behaviour.?

According to the power law i=av^b, for a material (reduced graphene oxide) to be capacitive the value of b=1 whereas b=0.5 for battery like behaviour. However, the CV shows a quasi rectangular...

27 February 2020 4,852 4 View

EIS is measured at instantaneous open circuit potential of the instrument. Why?

On starting an experiment we stabilise the system by measuring OCP for an hour whereas for EIS we use the OCP from the instrument itself. What is the significance of measuring the OCP in the...

20 February 2020 2,194 3 View