Hello everyone,
I was wondering if you could kindly give me your opinion from e-chem experience on this. We are having a bit of a debate over the setup of a cell with a liquid metal electrode at the bottom, Au or Ag CE + monomer to be polymerized in solution with TBAPF6/DMSO:
1. Using Ag/AgCl. In my opinion, Cl- are not easily solvated in DMSO and other organic solvents. That could lead to the Liquid Junction Potential interfering with our readings.
Or is this effect minimal because the RE would be immersed in the same electrolyte?
2. Using Ag/AgNO3, the recommended RE for non-aqueous electrolytes.
3. I also generally do not like the idea of using a quasi-reference. It is simple and more cost-effective, but we would need to add an internal reference like Ferrocene.
Are my thoughts realistic? What is your opinion? Thank you!
Re. 1. What is the solubility of e.g. LiCl? If it is acceptable you could also add the same supporting electrolyte in the same concentration to the ref electrode compartment to minimize the LJ potential.
Re. 2. We have used Ag/Ag+ electrode in DMSO and it worked well.
Re. 3. I do not understand what quasi-reference you are talking about. It is best to use thermodynamically well-defined electrodes.
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