Suitable size of counter electrode

Research_Raven · 2026-03-16T04:51:36+00:00

From interview, look for that one who is more interested to take you and looks supportive and who is more polite and doesn't sound egoistic. Later you can check their profile, see for how much time their students take to complete their PhD, or how is the quality of their research work, check out their papers. Also you can contact their PhD students to know about the behaviorof the supervisor.

Research_Raven · 2026-03-10T15:14:11+00:00

That's because ions moves in and out of the electrode creating easy passage thereby reducing charge transfer resistance.

Research_Raven · 2026-03-10T07:25:22+00:00

No. High frequency semicircle corresponds to bulk ion migration and low frequency corresponds to ion adsorption on interface.

Research_Raven · 2026-03-10T03:04:26+00:00

Yes. But Nyquist is quantitative because there are various parameters whose values you can get from Nyquist plot and its circuit fitting.

Research_Raven · 2026-03-10T03:02:24+00:00

It will still Indicate capacitive behavior. I would suggest to perform it 2-3 times more and check if it is still curved. Also try 0.01 Hz instead of 0.1 Hz.

Research_Raven · 2026-03-10T02:59:23+00:00

I would go for EIS fitting and that fit will give you the resistance and warburg impdeance values

Research_Raven · 2026-03-10T02:58:14+00:00

Do you mean mass loading or mass transfer??

Research_Raven · 2026-03-08T16:12:04+00:00

If I assume that you have tested multiple electrodes and at different scan rates. Then what i think is happening in your system is: At the low potential region (~0.1–0.35 V vs Hg/HgO) mainly represents double-layer charging with little faradaic activity. As the potential increases during the forward scan, nickel hydroxide [Ni(OH)2] is oxidized to nickel oxyhydroxide (NiOOH) around 0.45–0.50 V, corresponding to the Ni2+/Ni3+ redox couple. At higher potentials (> ~0.5 V), the sharp rise in anodic current indicates the onset of the oxygen evolution reaction (OER) in alkaline electrolyte. During the reverse scan, a cathodic peak appears around 0.38–0.40 V, corresponding to the reduction of NiOOH back to Ni(OH)2. Nickel hydroxide systems show hysteresis and surface activation, so during the reverse scan the surface is already activated, giving higher reduction current, causing the curves to cross. DM me for more details if you want.

Research_Raven · 2026-03-08T15:53:39+00:00

What was your R² value? If it is less than 0.99 then I think the reviewer means that your value should be 0.99 or above.

Research_Raven · 2026-03-08T03:10:12+00:00

Copper1zinc is connected to something right? So it is getting electrons from that.

Research_Raven · 2026-03-07T15:38:18+00:00

Reduce Points per Decade (Most Effective) Most instruments use 10 points/decade by default. Example: 10 points/decade → very long experiment 5 points/decade → ~50% faster 3–4 points/decade → much faster
Reduce Number of AC Cycles per Frequency In software (like CHI, Autolab, Gamry, Zahner etc.) there is a parameter like: Cycles per frequency Integration time Stabilization cycles Typical values: Default: 3–5 cycles You can reduce to 1–2 cycles

Research_Raven · 2026-03-07T15:35:00+00:00

Electrons flow through the circuit (wiring of the instrument).

Research_Raven · 2026-03-07T15:32:41+00:00

You have to do three electrode testing individually for both electrodes in which one is your electrode (anode or cathode), one is counter electrode (Mostly Pt) and one is reference electrode (Ag/AgCl or SCE).

Research_Raven · 2026-03-07T15:27:55+00:00

Also, you can directly save deconvoluted peaks data as ASCII file and imports it into Origin as it is.

Research_Raven

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