Why there is a straight line in my CV curve?

I am scanning CV curves using 3M Na2SO4 electrolyte in Ag/AgCl, Pt mesh and Phos-COF as my positive electrodes, respectively. Every time it gives me straight line at 0. Why this happens?

31 December 2019 3,700 0 View

For supercaps electrode, if my active material mass is 3 mg ans area of my sample is 2*3 cm-2. what will be my current density to apply?

How we can determine the proper value of current density that i should apply to this system? What is the general procedure to select suitable current density to that system which i mention above....

02 March 2019 9,668 2 View

How we can explain this SEM results? NiCo2S4 composite with CNT?

How we can explain this ...

02 March 2019 7,429 3 View

WHY I OBSERVE SUCH TYPE OF BEHAVIOR IN MY CCD OF C@SiOx composite?

I am using 3M KOH as electrolyte with Pt counter as counter and Ag/AgCl as reference electrode for my system.with increasing current density why potential is increases? Is this is unusual behavior...

01 February 2019 9,490 4 View

Why the CV curves area of my electrode is zero below 0V?

Is its a normal behavior? If not, then any reason, any comments, suggestions will be highly appreciated

31 December 2018 557 6 View

What is the current density 0.00001, 0.00005, 0.0002 for Charge-discharge measurements using CHI660D INSTRUMENT?

I am using the desired setup for CCD in my work. my question is, what does these value corresponds to how much current in ... A/g?

31 December 2018 5,160 3 View

How i can calculate cycles number with respect to specific capacitance from CHI660D?

The graph between number of cycles with respect to specific capacitance

31 December 2018 9,000 0 View

What is the technical way to choose potential window of two different materials using as supercapacitors?

I want to use NCS/CNT as cathode and Carbon fiber paper (CFP) as anode for supercapacitor assembly and i want to widen the potential window. My question is; what is the criteria to take anode...

11 December 2018 7,797 0 View

Why the shrinking of discharge time is observed when current density is increased?

NiCo2S4 with 6M KOH electrolyte with Ag/AgCl used as reference electrode

08 September 2018 2,531 4 View

Why Ni foam current is so high without pressing?

I am using 6M KOH electrolyte and tested the behavior of Ni foam without pressure and with pressure. I observed that, with no pressure (without press Ni foam) the current is very high as compared...

03 April 2018 3,736 7 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

How to simultaneously perform multiple biochemical assays?

I am a research scholar working on heavy metal stress on plants. I will be doing biochemical characterisation( protein, carbohydrate, proline, antioxidant enzymes and many more assays) at interval...

01 March 2021 6,999 3 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

I have a problem with kanamycin - why the kanamycin doesn't affect?

Hi everyone, I need to expression of GFP with pET28 plasmid in E. coli BL21(DE3) plysE. Transformed cells have kanamycin and chloramphenicol resistance. Normally, only transformed cells should...

22 February 2021 4,032 4 View

How does elongation affect the resistance of an electrode?

What are the testing rate for electrodes recommended by ASTM for cochlear implants. I am currently doing the 15mm/min elongatio testing.

22 February 2021 1,515 1 View

Resistivity of PVD TiNx thin films vs. N2 flow?

In the PVD of TiN thin films (~100A), I've found the resistivity of the TiN films dropped from ~100 to 60um*cm with N2 flow increasing up to the metallic mode ending point; then the resistivity...

21 February 2021 1,864 2 View

Where can the fault diagnosis data set of lithium battery be found?

Most of the data sets on the network only contain good information about the voltage and internal resistance of lithium batteries. The data of faulty battery is missing. Who can help me, I will be...

21 February 2021 8,659 1 View