What is the effect of charge discharge current density on the coulombic efficiency of a electric double layer electrochemical capacitor??

The coulombic efficiency of my supercapacitor device is increasing with the increase in the applied current density of charging-dicharging. Can someone please enlighten me on this trend because...

31 December 2019 3,852 4 View

Can we calculate the thickness of a thin film (1-10 nm) using XPS depth profile analysis?

I have performed XPS analysis of a multilayered thin film. However, the analysis gives a relation between the sputter time and intensity of various elements. Is there any relation or approximation...

03 April 2019 3,206 15 View

Which current and voltage values are to be taken in account for calculating percentage of capacitive and diffusion current from CV data?

I did the CV analysis of my sample (CNT-MoS2 hybrid) at small scan rates (0.1-1 mV/sec). However, my results show no peaks even at the lowest scan rates, and in order to utilize the Dunn's...

11 December 2018 4,731 3 View

What factors decide the capacitance retention (cyclic life) of supercapacitors?

I have used ITO and metallic foam as current collector to prepare my electrodes (metal sulphide as active material). The specific capacitance is higher for metallic foam due to obvious reasons....

11 December 2017 6,392 4 View

Can anyone help me in interpretation of my XPS data of WS2 thin films?

Lately i have been trying to understand my XPS data for WS2 thin films. The elemental scan i obtained for sulphur was in agreement with the previously reported literature. However, the scan for...

10 November 2017 3,120 4 View

How can i increase adhesion of WS2 thin films deposited by DC magnetron sputtering?

I am depositing WS2 thin films using magnetron sputtering to be used as electrode material for supercapacitive application. I have tried various substrates( Stainless steel, ITO) but failed to...

10 November 2017 858 3 View

Where exactly does the photon absorption takes place (p-layer, n-layer or the junction) in a solar cell and why?

I have read alot of data however its still confusing for me.

02 March 2017 2,278 9 View

Considering thin film based supercapacitors, what would be the effect of thin film's thickness on the supercapacitor's electrochemical performance?

I want to decide the optimizing range for the synthesis of my thin films (transition metal oxides and transition metal sulphides) to be used as electrode material in supercapacitors so as to get...

01 January 1970 9,305 0 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Does any one can help me choose a reasonable basis set for intermediate metal ions interactions with guanine (i.e Fe2+, Mn2+, Cu2+ and exc.)?

Hello every body Does any one has any idea to help me choose a reasonable basis set for intermediate metal ions (i.e Fe2+, Mn2+, Cu2+ and exc.) interactions with guanine or other DNA organic...

01 March 2021 6,187 2 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

Why does intensity drops as concentration increases?

Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?

28 February 2021 3,653 4 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

How to prepare a thin polymer film by post-polymerization/crosslinking?

24 February 2021 2,362 5 View