Am asking this particularly for chronoampherometry with FTO as working in AcCN solution with electrolyte
Hello Sujit Bhand ,
First, would you like to run your experiment in a two or three electrode system? If you are in a three electrode system I would suggest to use a conventional reference electrode like Ag+/Ag.
What current do you observe and what is your electrode area? If the current density is low, the polarisation effect of the RE will be reduced. In this way, you can normally get away with using a two-electrode system. I would also check that there are no secondary reaction involving the material of the RE. Another option is to add a redox marker. This will give a fixed reference point for validation.
The easiest option is to purchase Ag/AgCl ink (try BASi as a supplier) and coat an Ag wire with this mixture.
Graphite foil can be complicated, so I would not recommend this.
Best regards,
Marie B.
Hi,
If you don't have a real reference electrode for non-aqueous media, Pt wire can be used as a pseudo-reference electrode (pseudo. ref/counter in two-electrode config. or just as a pseudoref. electrode in the three-electrode system). Just keep in mind all the limitations of pseudo-reference electrodes.
I used Pt wire many times as pseudoref. electrode and it worked just fine.
Hello,
Yes you can use a Pt electrode as a REF in a 3 electrode system. As mentionned by Aleksandar Karajic , it will be a pseudo-reference. This pseudo-reference will have normally a stable potential in your electrolyte (the potential of this REF will be sensitive to the surface of your working electrode and the composition of your solution) but you won't know its potential. The problem you will encounter is probably if you try to compare results with articles because Pt won't have a stable and identical potential in different electrolytes.
Best Regards
Thomas
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