How do you choose the appropriate voltage to put in chronoamperometry? I am running a LSV in my clean NF with a certain solution. The curve seems to "bend" at -0.3 and +0.7 V. Does it have a technical meaning related to electrodepositing at a certain voltage?
I would appreciate your responses. Thanks.
this paper talks about the minimum potential required for electrodeposition based on CV profile:
10.1021/acs.jpcc.5b05109
No redox process happens if the potential is in the range -0.3 ... 0.7 V.
What does NF mean? Does your cell have 3 electrodes? What solvent do you use (if the solution is aqueous, the cathodic limit of - 2 V is strange)?
Describe the experiment in more detail. Try CV, not LSV. Start scanning at OCP.
Sorry, NF is nickel foam as my working electrode. The setup was done in three-electrode system with Hg/HgO as reference and Pt foil as counter.
The solvent I used was 50-50 water-ethanol system.
As Cornel-Radu; try, please, some CV cycles (n=>2); select, please, at least, two rates, Vr: 1 mV/s, 0.1 mV/s.
Also, say, please, what is the origin (or the purity) of the nickel foam, as well as the origin/purity of the water and the ethanol ?
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