Hi all,
In electrochemical measurements, it is intriguing to me how different voltage windows are elected for various active materials. Could someone please cite the key parameters to bear in mind in order to select the upper and the lower voltage limits in a general manner? I would appreciate it if you could share your insights on this subject.
Thanks in advance
I am not sure whether or not I catch your question right, But I think the answer should be related to the following parameters.
1. Cathode active material should behave safe and durable in that potentials, for example some materials release oxygen in higher voltage, some materials could be decomposed or convert to an irreversible state at higher or lower voltages. so you can determine the safe window by LSV test.
2. Another parameter which is equally important if not more, and can effect on the potential window is the stability of electrolyte in that voltage range. it can be determined by LSV as well.
3. Normally the lower range of voltage depends on the anode and its stability in that potential.
it is noteworthy that in routine situation that researchers are going to work on a specific material, for example a PhD student working on NMC cathode, they consider the suitable working voltage based on papers unless they are going to work on something that can effect on this potential window.
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