Related Experiment Video
Updated: Feb 23, 2026

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Anodic Dissolution of Al Current Collectors in Unconventional Solvents for High Voltage Electrochemical Double-Layer
Jakob Krummacher1,2, Lars-Henning Heß1,2, Andrea Balducci1,2
1Institute for Technical Chemistry and Environmental Chemistry, Philosophenweg 7a, 07743, Jena, Germany.
Abstract:
This study investigated the anodic dissolution of Al current collectors in unconventional electrolytes for high voltage electrochemical double-layer capacitors (EDLCs) containing adiponitrile (ADN), 3-cyanopropionic acid methyl ester (CPAME), 2-methyl-glutaronitrile (2-MGN) as solvent, and tetraethylammonium tetrafluoroborate (Et4 NBF4 ) and tetraethylammonium bis(trifluoromethanesulfonyl)imide (Et4 NTFSI) as conductive salts. To have a comparison with the state-of-the-art electrolytes, the same salts were also used in combination with acetonitrile (ACN). The chemical-physical properties of the electrolytes were investigated. Furthermore, their impact on the anodic dissolution of Al was analyzed in detail as well as the influence of this process on the performance of high voltage EDLCs. The results of this study indicated that in the case of Et4 NBF4 -based electrolytes, the use of an alternative solvent is very beneficial for the realization of stable devices. When Et4 NTFSI is used, the reduced solubility of the complex Al(TFSI)3 appears to be the key for the realization of advanced electrolytes.
More Related Videos
Related Concept Videos
Electrodeposition
Electrodeposition can...
Dielectric Polarization in a Capacitor
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...

