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Updated: Dec 24, 2025

Evaluating the Electrochemical Properties of Supercapacitors using the Three-Electrode System
Published on: January 7, 2022
Pressing a spring: what does it take to maximize the energy storage in nanoporous supercapacitors?
Svyatoslav Kondrat1, Alexei A Kornyshev
1Forschungszentrum Jülich, IBG-1: Biotechnology, 52425 Jülich, Germany. s.kondrat@fz-juelich.de.
Abstract:
We discuss the nonlinear effects and efficiency of charge storage in supercapacitors with nanoporous electrodes and ionic liquids, and demonstrate that to maximize the stored energy, it may be beneficial to create 'obstacles' or 'difficulties' in charging. This can be achieved by making thermodynamically unfavourable conditions for ions inside nanopores, or more favourable outside. We show by means of Monte Carlo simulations that such 'ionophobic' pores store energy more efficiently and can provide equivalent or even better energy capacity. Since the recent analysis predicts much faster charging of ionophobic nanopores, we conclude that such pores offer a better option for simultaneous energy/power optimization.
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