Why iron based metal oxide not showing redox peaks in KOH electrolyte ?

15 April 2023 1 7K Report

I am working on iron based metal oxide as working electrode using Ag/AgCl reference electrode in koh electrolyte. I have seen many literatures in which iron shows redox peaks. But when i have performed electrochemical performance in all potential ranges there is no peak. Is it fine ? and without any observable peak we can say that there is change in oxidation state of iron ?

Fawzi Hadji

Yes, It's okay,

I think that your iron-based metal oxide does not contain oxygen vacancies. You can check it using the XPS analysis. you will find here an explanation of the reason which led to the oxidation of the transition metal in the KOH electrolyte.

Article Zinc doping effect on the structural and electrochemical pro...

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