Why is this cyclic voltammetry not like another ? What make it like this and how to fix ?

20 June 2024 0 8K Report

Hi everyone

I am doing research on manufacturing cathode (V2O5) for zinc batteries (ZIBs). The procedure is as follows: Mix 3g V2O5, 40ml H2O2, 300ml H2O, then hydrothermally heat for 48 hours, dry and calcine at 200°C and then measure CV. When i measure it after 2days it's normal, when i measure it after 10 days and I have this abnormal CV curves.

I don't know why it like this ?

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