Thursday, September 12, 2019

electrochemistry - Decreasing magnitude of peaks in cyclic voltammogram?


I'm in an instrumentation course and we covered cyclic voltammetry earlier in the semester and will be doing an experiment in CV next week.


My question is this:


If you have a reaction and sweep the potential, will the new peaks be entirely within the previous peak? (Meaning: lower magnitude in the subsequent peaks?) It seems that with each sweep, it should have lower electrical potential.


Or would the peaks trace over the previous ones, nicely?


Pardon me for not fully understanding (or if my question is wrong.)



Enjoy a poorly drawn image of what I mean:


enter image description here




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