Mohit Saraf

15 Questions 36 Answers 0 Followers

Questions related from Mohit Saraf

How porosity and surface area affect supercapacitor performance (and other electrochemical applications) ?

Usually, high surface area and porosity are reported to be the primary reasons for good electrochemical sensing and supercapacitor performance. Please explain what exactly happens with high...

25 June 2019 6,710 6 View

Is it necessary that a composite of metal oxide and rGO should always exhibit better energy storage properties compared to only metal oxide and rGO?

Kindly shed some light on it. In my case, the rGO alone is providing better supercapacitor properties than composite.

08 April 2019 7,945 3 View

How to make composite using ultrasonication, when one of your constituents is Grphene? What should be the ratio of both participating materials?

Suppose, I want to make a composite of MOF and graphene. I wish to study the effect of relative content of participating constituents on the electrochemical properties. How to choose the ratio for...

25 June 2018 3,835 5 View

Why in my EDX spectrum of NiCo2O4, Chlorine (Cl) peak emerges ?? Precursors are acetate for both Ni and Co.

EDX is semi-quantative. Is it the reason ?? Please elaborate it !

03 July 2017 4,601 3 View

Why in some cases Binder free electrode works well (stable ~95% after 1000 cycles) during continuius charging discharging of supercapacitor test ?

I am trying one coordination polymer as electrode material on glassy carbon electrode. It is showing good stability. What can be the reason?

20 June 2017 9,526 6 View

In case of glassy carbon electrode, how can we characterize it after electrochemical testing?

Is SEM, XRD or XPS possible on glassy carbon electrode?

11 March 2017 6,109 7 View

What is overpotential w.r.t. electrochemical sensors? How to minimize it?

Why in some cases it is very high ?

15 January 2017 9,602 5 View

How specific capacitance depends on mass loading?

It is okay that more mass loading may increase resistance and therefore capacitance will be less. However, what should happen ideally when we increase mass loading? If I use very less mass...

16 September 2016 3,173 1 View

Can shpe of CV be changed by different mass loadings on electrodes?

I have observed this thing while doing supercapacitor experiments. The shape of CV at a particular mass loading seems rectangle shaped but on increasing mass loading the shape changes.

01 September 2016 5,007 6 View

Why sometimes Cyclic voltammetry cycle is not complete?

I have noticed that in some cases CV profile is not a closed cycle, instead there is a cut. Why it happens? Can it be a material propertiy also?

31 August 2016 5,400 15 View

What is the effect of sonication on particle size before TEM analysis?

I made one composite material of metal oxide and graphene. In SEM, particle size of metal oxide ranges between 1-10 um even in the composite, but in TEM, the composites showing 100-200 nm...

13 June 2016 7,174 5 View

How do I calculate active mass of material of electrodes while calculating specific capacitance in supercapacitor?

I have seen in papers that they use active material mass on both electrode to calculate specific capacitance. What's that? what other things we should consider before starting the supercapacitor...

09 September 2015 9,319 2 View

Why did my peak shifts to higher potential after successive addition of analyte in cyclic voltammetry?

It is happening with me and peak has shifted from 0.2 to 0.9v.

01 September 2015 7,186 5 View

In glucose sensors, how important is it to optimize the pH of the supporting electrolyte?

What are the other parameters which should be optimized? I have seen that people directly use solution of particular concentration and do the electro-chemical experiments. I have observed this in...

28 August 2015 3,691 5 View

How to calculate limit of detection and sensitivity of biosensor from calibration plot (Current vs Concentration)?

I am trying to calculate LOD and Sensitivity. In calibration plot, my X-axis is Concentration (mM) and Y axis is Current (microampere). Slope is 3.3417 and standard deviation of blank is...

07 August 2015 911 21 View