Influence of surface oxides on the impedance behavior of carbon-based electrochemical capacitors

By Yau-Ren Nian, H. Teng. 2003

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Capacitive mechanism of oxygen functional groups on carbon surface in supercapacitors (2017, methodology): “Although many researchers had reported that no obvious redox peaks were observed in the CV curves of carbon materials, by analysing the experimental phenomena, Cheng and Teng[48] thought that the redox reactions still existed in KOH solution.”
Reviewing the fundamentals of supercapacitors and the difficulties involving the analysis of the electrochemical findings obtained for porous electrode materials (2020, background): “This type of CV pro ﬁ le is indeed veri ﬁ ed for several EDLCs and PCs [270 – 272], i.e., it is sometimes dif ﬁ cult (if not impossible) to discern capacitive and reversible Faradaic events occurring during the charge-discharge processes in super-capacitors since in both cases the voltammetric…”