My setup is a two-chamber reactor. The anode is Pt/C coated carbon paper and the anolyte is a mixture of 5M NH3 solution + 1M NaOH solution. The cathode is Pt/C coated carbon cloth with a coating of 4 diffusion layers (air-cathode) and the anolyte is 1M NaCl (though I also tried with 1M NaOH). I'm using an anion exchange membrane.
The reference electrode is Ag/AgCl placed at the anode side. The value of OCV is between 0.2-0.3V. The problem is whatever settings I do, I'm getting the same CV curve in the absence and presence of ammonia solution (Pictures are attached for reference). Is there any problem with the cell connections or settings of the fuel cell system? The peak should be different in both cases.
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