The immersion potential of high surface electrodes

On the use of activated carbon as a quasi-reference electrode in non-aqueous electrolyte solutions

“…Due to the robustness of the AC QRE against incidental charging, its potential upon immersion in the electrolyte solution is expected to be close to its potential of zero charge (pzc) [10]. In this case, the potential of the AC QRE can in a first approximation be equated to the work function [14,15].…”

“…Tobias and Soffer [10] measured variations in the immersion potential of a carbon black following different surface treatments and found values between À0.5 V (strongly reduced) and +0.36 V (strongly oxidized) vs. Ag/AgCl. It is important to be aware of this effect of pretreatment when considering the implementation of AC QREs.…”

Electrochemical characterization of single-walled carbon nanotubes for electrochemical double layer capacitors using non-aqueous electrolyte

“…The difference in potential can be regarded as a measure of the relative positions of the potentials of zero charge (pzc) for the two materials. Since YP17 was used as the reference electrode material, it is not surprising that the respective minimum in capacitance is observed at 0 V, as the immersion potential is equal to the pzc for high surface area electrodes [37]. According to Fig.…”

Can conductivity measurements serve as a tool for assessing pseudocapacitance processes occurring on carbon electrodes?

“…Thereby, these samples have a smaller surface area compared to the pristine CO 2 activated carbon samples. Chemical reduction using Ar/ H 2 at 900°C reduces the content of oxygen-containing surface groups present on the carbon samples [10,13]. Thus, the specific area of these samples was somewhat larger than that of the samples activated only by CO 2 at 900°C and stored under ambient conditions.…”