What is the reason to run a CV for symmetric supercapacitor at negative potential window (i.e., -0.5 ~ 0.5 V)?

11 September 2022 0 5K Report

For a symmetric supercapacitor device, the electrochemical capacitance, energy and power densities are calculated from GCDs. In particular, the potential window normally ranges from 0 to 1.0 V. However, some literatures shown that the CV profiles of the as-fabricated symmetric supercapacitor within both negative and positive potential (i.e., - 0.5 - + 0.5 V or - 1.0 - + 1.0V). The relevant literatures are listed below: RSC Adv., 2015, 5, 17228-17235; RSC Adv., 2017, 7, 11724-11731; RSC Adv., 2015, 5, 12700-12709;

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