What can you infer from my Cyclic Voltammogram?

Dear friend Jasper Clifton

In your case, comparing the CVs of LNFO and LSNFO can provide information about the impact of strontium substitution on the electrochemical properties of the perovskite electrocatalyst. Some things you may be able to infer include:

Changes in redox behavior: If the CVs show differences in the shape or position of the redox peaks, this could indicate changes in the redox behavior of the system. This could be due to changes in the oxidation state or coordination environment of the metal ions, or changes in the availability of active sites for catalysis.

Changes in electrochemical activity: If the CVs show differences in the current density or onset potential for the oxygen evolution reaction (OER), this could indicate changes in the electrochemical activity of the catalyst. This could be due to changes in the surface area, surface composition, or surface morphology of the catalyst.

Impact of strontium substitution: By comparing the CVs of LNFO and LSNFO, you can gain insight into the impact of strontium substitution on the electrochemical properties of the perovskite electrocatalyst. This could help you to understand the role of strontium in the A-site and how it affects the performance of the catalyst for OER.

Chaitanya Mahajan

The graph shows that the onset potential for OER occurs at 0.3 V overpotential for both samples. The onset potential for LSNFO is lower than that of LNFO, and it is also evident that LSNFO generates a higher current than LNFO. Based on this information, LSNFO is a more active catalyst for OER than LNFO.

However, it's important to note that these observations are only valid if both samples have the same surface area. To make a more accurate comparison, examining the polarization plots with the current normalized (current density vs. overpotential) would be better, as this accounts for any differences in surface area between the samples.

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