Mohit Saraf

32 Questions 52 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...

06 June 2019 5,173 6 View

What are the parasitic reactions (between electrode and electrolyte), which affect coulombic efficiency of Supercapacitors?

Please give some details. Why it happens in particular for battery like electrodes?

06 June 2019 9,726 2 View

How to calculate Areal Capacitance?

I have calculated specific capacitance of 200 F g-1. Now I wish to calculate Areal Capacitance. What is the formula? Electrodes: working Glassy carbon electrode of 3mm diameter (0.0707...

06 June 2019 2,341 5 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.

04 April 2019 9,101 4 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...

06 June 2018 778 5 View

Expected Impact factor of Chemistryselect ?

New journal of Wiley-VCH

01 January 2018 8,457 51 View

How to differentiate soild-state thermolysis, calcination and annealing ?

Can solid state thermolysis and calcination be called same at any particular conditions ?

08 August 2017 4,071 1 View

How to determine linear range of a biosensor ?? Which is the easiest and best method ??

There are various methods to determine it. Can anyone show with example their suitable employed method ??

06 June 2017 4,862 1 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?

06 June 2017 4,437 7 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?

03 March 2017 2,316 7 View

Which concentration of Nafion should be taken for glcuose sensors? Also how much smooth layer of it can be obtained on the glassy carbon electrode?

Generally, we use Nafion along with our nanomaterials to provide it sticky nature and anti-interference nature, but up to which extent it can be done?

03 March 2017 491 2 View

Among reduced graphene oxide (rGO) and nitrogen dooped reduced graphene oxide (NRGO), whose conductivity is more and why?

I have observed higher values of supercapacitance of NRGO than rGO, which has better dispersion than rGO. But what can be the possible reason of higher supercapacitor performance? Has it something...

03 March 2017 561 2 View

Why there are so many sensors reported on L-tryptophan but not on D-tryptophan ?

I could not find any relevant answer...Though it is reported that L-Trp can not be synthesized by our body....

03 March 2017 7,836 1 View

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

Why in some cases it is very high ?

01 January 2017 5,551 5 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.

09 September 2016 2,392 7 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...

09 September 2016 3,141 1 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?

08 August 2016 9,557 16 View

What is electrochemically active surface area (ECSA)? How to calculate it? by which assembly, we can calculate it? What is the advantage?

I calculate specific capacitance by using mass of active material .

06 June 2016 857 2 View

Conductivity of graphene is greater than metal oxides, but why in some cases charge transfer resistance (Rct) of metal oxides is lower than graphene?

In EIS, I have observed this thing, what can be the reason behind it?

06 June 2016 6,860 3 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...

06 June 2016 2,412 6 View

How the size distribution profile of Graphene looks like?

I made graphene dispersion in ethanol and performed DLS. Please find the graph and suggest whether it is fine or not?

05 May 2016 8,589 2 View

How to draw ragone plot? What information we should have to draw ragone plot for our material based supercapacitor?

I want to draw it in origin !!

02 February 2016 7,666 7 View

Which are the common binders used along with our materials to fabricate working electrode in super capacitors? What can be their possible roles?

I know Nafion has been extensively used as a binder.

02 February 2016 6,617 3 View

Any good basic book on supercapacitors in simple language?

it should include the working and type of supercapacitors.

01 January 2016 758 2 View

Is it possible that for a reported supercapacitor material the potential window in charge discharge comes out to be entirely different?

I have seen that in some papers potential window is -0.9 to -0.1, and for the same material having same synthesis procedure and mechanism, potential window is 0.2 to 0.6.

12 December 2015 1,871 3 View

Why are shifts observed in characteristic XRD peaks of metal oxide when their composites are synthesized with reduced graphene oxide?

I have observed some shifts in characteristics peaks of my metal oxide when it was combined with reduced graphene oxide. what can be the possible reasons?

11 November 2015 2,833 9 View

If anodic current increases llinearly with scan rate then the process is diffusion controlled.What does that mean?what is anodic current in CV CURVE?

I have observed this in a lot of papers.

09 September 2015 4,062 1 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.

09 September 2015 7,925 3 View

is it possible that Linear detection range is in milimolar but Limit of Detection in micro or nanomolar? If yes then how?

Can anyone tell me the process to calculate LOD ? How exactly S/N method works?

08 August 2015 546 0 View

How to calculate Charge Transfer Resistance (Rct) by Randle Equivalent circuits? What are the other methods to calculate it?

The expression of Rct derived by Butler-Volmer equation is Rct = RT/nFio where io= exchange current density F= Faradays constant T= temperature R= gas constant n= number of electrons involved.

12 December 2014 7,463 1 View

Why do semicircle and Linear region appear in Nyquist plots in Electrochemical Impedence Spectroscopy?

What is the meaning of electron/charge transfer limited process which we assign to semicircle and mass transfer limited process which we assign to linear part? What actually happens there...

11 November 2014 7,245 1 View

How does pH affect the morphology of a resultant nanostructure?

Is it related with head to tail or tail to tail coupling?

05 May 2014 4,966 1 View