We are planning to study the electrochemical property of sputtered nickel film. What types of electrodes should we use to perform the cyclic voltammetry of the film with KOH electrolyte?
Hi Nizam,
What do you mean regarding to "type of electrode"? For what purposes you would like to sputter nickel films?
Dr. Kotok,
I want to know about the counter electrode and reference electrode used for cyclic voltammetry of nickel film. I found the attached paper used platinum foil as counter electrode as well as reference electrode but H2SO4 as electrolyte. I want to know about the electrode for KOH electrolyte.
I would like to use the sputtered nickel film for supercapacitor electrode.
Dear Nizam,
In our lab we often use a nickel foil or nickel grid as a counter electrode (in strong alkali it is OK), It is possible to use Pt (it is a "classic" counter electrode for broad cases due to it inert properties). For measuring - Ag/AgCl or Hg/HgO reference electrode. But I almost sure that H2SO4 will destroy NiO or Ni(OH)2.
Also, you can try to use Pb electrode as a counter electrode instead of Pt for strong H2SO4 as an electrolyte
My personal choice would be to use a glassy carbon electrode.The question one has to ask is what impurities from the CE can one live with and pick the electrode based on that.
for cyclic voltammetry of nickel oxide film, Pl wire is used as counter electrode and Ag/AgCl electrode is used as reference electrode and the concentration of KOH is 0.1 M or 1 M LiClO4, it is better.
carbon electrode is also suitable for this experiment as the counter electrode.
H2SO4 solvent is not suitable for testing NiO thin film.
My workmates used Ni foam to produce hydrogen in alkali media. As counterelectrode they used a Pt foil without problem and the reference electrode was an Ag/AgCl.
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