I have seen that in some papers potential window is -0.9 to -0.1, and for the same material having same synthesis procedure and mechanism, potential window is 0.2 to 0.6.
I m working on metal oxide graphene composite for super capacitors using Ag/AgCl as reference and modified glassy carbon electrode as working. At a particular current density my charge discharge graph starts from 0.1 or 0.2V and goes up to 0.6V, But for the same material prepared by same method, reported potential window is -0.1 to -0.9. Is that possible?